To Manufacturers of Knitted Goods.

OHN KENT is now in England, completing arrangements so as to be able to supply his American friends with his improved Knitting Machines with greater dispatch, and with all the latest improvements. He would beg to call especial attention to

The Improved Rib Top Frame, now so well known, and acknowledged to be the best rib top frame ever built, for speed and quality of goods produced. Price, delivered free in New York, $520, currency.

The Improved Circular Web Frame, for drawers and shirts, built of any size and gage. Price for a 4-head set, 17 inch to 20 inch diameter, $810, currency, delivered free in New York.

The Circular Stocking Frame, from 2 in. to 5½ in. diameter. These circular frames, with my last improvements, are as near perfection as possible.

The Patent Full-fashioned Shirt, Drawers and Stocking Frames produce the most perfect goods ever made by steam-power machinery, and cost fifty per cent less to keep in repair than any other Knitting Machine. Built 10 to 24 gage, and from 30 to 140 inch wide, to order.

The Improved Circular Looping Frame, for putting on shirt cuffs, drawers bands, clearing the top of circular shirts, &c., built to order, of any size, from 2 in. to 22 in. diameter, and of any gage.

Steel Needles and Sinkers to pattern.

Persons wishing to order while Mr. Kent is in England, will please address JOHN KENT, Nottingham, up to April 12th, or, if they prefer, may send through depot.

Address

JOHN KENT, 348 Pearl st., New York.

—For Description, Price Lists etc., of the Best Centrifugal Pump ever invented, with Overwhelming Testimony in its favor, send for new illustrated pamphlet (40 pp.) to Messrs. HEALD, SISCO & CO., Baldwinsville, N. Y.

ST. JOSEPH, Mo., Nov. 10, 1870.

T. R. BAILEY & VAIL, Lockport, N. Y.:

Gentlemen:—The Lathe you shipped me has arrived, and I have it in full operation. It works perfectly, and I think it the best lathe made in the world for Bedstead and Chair work. I would recommend it to any one desirous of obtaining such a lathe. Yours truly,

H. R. BRISTOL.

WOOLEN MILL FOR SALE.

ith House and 3 acres of land, Seymour, Ct., (Naugatuck Valley,) 2 miles from R. R. depot. Never-failing stream. 3 ft. fall, dam and wheel in good condition. Inquire of JAS. ORMSBEE, on the premises.

Portable & Stationary

Steam Engines

ND HOISTING ENGINES. A good article at low prices. Every machine warranted. Send for descriptive Price List.

H. B. BIGELOW & CO.,
          New Haven, Conn.

PATENT BANDSAW MACHINES

Of the most approved kinds, of various sizes, to saw bevel as well as square, without inclining the table, by FIRST & PRYIBIL, 452 to 456 Tenth ave., New York. Price $250, $275, $350, and $400. At present (Oct. 16), there are in operation, in this city alone, 88 of our machines. Send for circular. Manufacture, also, an improved saw-filing apparatus; price, $30. Have also on hand a large stock of best French Bandsaw Blades.

L. & J. W. FEUCHTWANGER, 55 Cedar st., New York, Chemists, Manufacturers, and Importers of Specialities, Silicates, Soda and Potash, Chloride of Calcium, Peroxide of Manganese, Hydrofluoric Acid, Metallic Oxides, Steel and Glass Makers' and Potters' Articles, Publishers of Treatises on "Soluble Glass," "Gems," and "Fermented Liquors."

PIMLICO BRACES, SOMETHING NEW.

THIS invention is based on a strictly scientific principle, and is a valuable improvement on old style suspenders. It is simple in construction, and combines the qualities of Brace and Suspender. They are unequaled for elegance, durability and comfort. Manufactured at the Monumental Silk Works, Baltimore. JOHN M. DAVIES & CO., Sole Agents, 384 & 386 B'd'y, N. Y.

Dr. J. ARMSTRONG'S
(Patent)
Improved Heater, Filter, Lime Extractor, and Condenser Combined,

For Steam Boilers.

MANUFACTURED BY Armstrong & Starr, Toledo, Ohio.
Send for Circulars.

Formerly Armstrong & Welsh.

OR SALE.—An Engine, 12x36 in. cylinder, and two Boilers, 4x15 feet, in good order, will be sold cheap.
J. J. TAYLOR & CO., 68 Courtlandt st., New York.

UNTING, Trapping and Fishing. All about it. Sent free. Address "Hunter," Hinsdale, N. H.

First Premium awarded by Am. Inst., 1870

T. H. McALLISTER, Optician, 49 Nassau st., N. Y.

Rare and Beautiful Flowers

—AND—

CHOICE VEGETABLES

Can always be obtained by Sowing

The Seventeenth Annual Edition of their celebrated "SEED CATALOGUE AND GUIDE TO THE FLOWER AND KITCHEN GARDEN," is now ready for distribution. It contains Four Beautifully Colored Lithographs, and about 300 choice Engravings of favorite Flowers and Vegetables, 136 pages of closely-printed matter, and a list of Twenty-five Hundred species and varieties of Flower and Vegetable Seeds, with explicit directions for their culture, and much other useful information upon the subject of Gardening. A copy will be mailed to all applicants inclosing 25 cts. Regular customers supplied gratis. Address

B. K. BLISS & SONS,

Nos. 23 Park Place, and 20 Murray st., P. O. Box No. 5712. New York.

Science for the Million.

THE

Boston Journal of Chemistry,

Devoted to the Science of Home Life, the Arts, Agriculture, and Medicine.

ONE DOLLAR PER YEAR.

A paper which commends itself at once to Physicians, Druggists, Chemists, Teachers, Farmers, Mechanics—in short, to Professional and Practical Men of every class.

The Domestic Recipes and Formulæ for Art Processes are of themselves worth many times the cost of subscription.

Specimen Copies Sent Free.

Address

BOSTON JOURNAL OF CHEMISTRY,
150 Congress st., Boston.

FOOT LATHES,

And all kinds of small tools. Illustrated catalogue free.
GOODNOW & WIGHTMAN, 23 Cornhill, Boston, Mass.

GENTS WANTED.—To sell Stephens' Patent Combination Rule, which embraces a Rule, Level, Square, Plumb, Bevel, Slope Level, T Square, etc., in one compact tool. These instruments retail at $3.50 each, and energetic salesmen can make money by selling them among mechanics. We warrant them in every particular, as the construction and graduation is faultless. Send for descriptive circular, cuts, and terms.

STEPHENS & CO., Riverton, Conn.

THE BEST, CHEAPEST and MOST DURABLE non-conductor known, for sale by the Original Manufacturer, at the

BOILER FELTING WORKS,  
46 Courtland st., New York.

Universal Wood Worker.

or Agricultural, Railroad, Car, Carriage, and Wagon Works, Planing Mill, Sash, Door and Blind, Bedstead, Cabinet and Furniture Factories.

McBETH, BENTEL & MARGEDANT, Hamilton, O.

Inventor's Exchange,

245 Broadway, N. Y.,

"Am. Agriculturist" Building.
TANGIBLE INVENTIONS NEGOTIATED.

No goods received unless ordered.

B. F. KEMP, Proprietor.

ACHINISTS' TOOLS, at greatly reduced prices. Also, some Woodworth Planers and Second-hand Tools. 97 to 113 R. R. ave., Newark, N. J.

E. & R. J. GOULD, successors to Gould Machine Co.

PATENTED Articles introduced. Also, State and County Rights sold for Inventors. STONE, PUGH & CO., 55 N. 6th st., Philadelphia.

OLDEN HILL Seminary for young ladies, Bridgeport, Conn. Miss Emily Nelson, Principal.

The old standard remedy for Coughs, Colds, Consumption. "Nothing Better." Cutler Bros. & Co., Boston.

HE CALVERT IRON ROLLING MILLS are offered at private sale. These mills are situated in the city of Baltimore, and cover 1½ acres of ground. The Machinery is of the most approved description, for making all sizes of round and square bar iron, from ¼ in. to 3 in. diameter, and flat bars of all widths, up to 7 inches.

The buildings are ample and commodious.

In addition to the Rolling Mills are two brick buildings (50x125 feet and 40x90 feet), now containing an 80 H.P. Engine, and Spike Machinery, but which could be used for the manufacture of Nails, Horseshoes, or any other branch of heavy hardware.

This property offers an unusual opportunity to capitalists, and will be sold at a reasonable price.

For further description address

MARSHALL  P. SMITH,                    
P. O. Box 1158, Baltimore, Md.

URDON IRON WORKS.—Manufacturers of Pumping Engines for Water Works, High & Low Pressure Engines, Portable Engines and Boilers, of all kinds, Sugar Mills, Screw, Lever, Drop, & Hydraulic Presses, Machinery in general. HUBBARD & WHITTAKER, 102 Front st., Brooklyn.

NGINES AND MACHINERY FOR SALE, at a great sacrifice. Two new Steam Engines, 12 and 20 horse power; 1 Faribain's Riveting Machine; 1 large Power Shears; 1 ditto Table Punch; 2 ditto Flange Punches; 1 set Power Bending Rolls; together with a large lot of Turning Lathes, Drilling Machines, Machinists' and Smiths' Hand Tools, Pulleys, Hangers, and 6 Fairbanks' Platform Scales. Send for catalogue, or apply at the South Brooklyn Steam Engine Works, cor. Imlay and Summit sts., Brooklyn.

HINGLE AND HEADING MACHINE— Law's Patent with Trevor & Co.'s Improvements. The Simplest and Best in use. Also, Shingle, Heading and Stave Jointers, Equalizers, Heading Turners, Planers etc.

      Address TREVOR & CO., Lockport, N. Y.

GENTS WANTED—($225 A MONTH) by the AMERICAN KNITTING MACHINE CO. Boston, Mass., or St. Louis, Mo.

THE

UNITED STATES

Brick Machine

IS THE

BEST IN THE WORLD,

BECAUSE IT MAKES THE

BRICKS.

It is the Perfection of Simplicity.

It is Durable, and not likely to get out of Repair.

See Scientific American, Sept. 17, 1870.

For Descriptive Circular apply to

F. C. WELLS, President,

Room 13, 98 Madison st.,
CHICAGO.

MACHINES can be seen in operation at the Company's Works, Chicago; at rear 59 Ann st., New York city; and at Novelty Iron Works, corner of Delord and Peter sts., New Orleans.

PREPARED

Asphalte Roofing Felt.

This new prepared production is ready coated, and can be applied on the roof without further trouble. It is easy of application, and does not require any repairs for a long time. It is more durable than some slates, and has been found a suitable substitute for iron or tin roofs. It has a sanded or stony surface, which renders it UNINFLAMMABLE and FIRE-PROOF. Exposed to the most intense fire, and sparks falling upon it, it will not propagate the fire. Under the influence of the sun it will not run, which makes it specially adapted to hot climates. Its easy application and pleasing appearance have made it a favorite roofing material throughout all the Indies and other colonies. Being not cumbrous for transport, it is of invaluable service to settlers and farmers in far remote districts. When used for temporary purposes it may be taken off and applied again to another construction. It replaces common Asphalting on Terraces, Lobbies, Counting-houses, Office Floors, etc.; is a great preservative against dampness and vermin, and equalizes the temperature. It is 32 inches wide, and made in rolls of 25 yards each. Send for circular to

E. H. MARTIN,     

70 Maiden Lane and 9 Liberty St., N. Y.

J. J. H. GREGORY'S

Seed Catalogue.

My Annual Illustrated Catalogue, containing a list of many new and rare Vegetables, some of which are not found in any other catalogue, and all the standard vegetables of the farm and garden (over one hundred of which I grow on my three seed farms), with a carefully selected list of flower seed, will be sent free to all. All my seed is sold under three warrants:

• 1st. That all money sent shall reach me.
• 2d. That all seed ordered shall reach the purchaser.
• 3d. That my seeds shall be fresh and true to name.

JAMES J. H. GREGORY, Marblehead, Mass.

THE NEW WILSON

AGENTS WANTED.

Under-Feed Shuttle
SEWING MACHINES!

$25 cheaper than any other!

For Simplicity, Durability and Beauty they stand unrivalled! For Stitching, Hemming, Tucking, Felling, Quilting, Cording, Binding, Braiding, Gathering, Gathering & sewing on gathers, they are unexcelled! For particulars address

Wilson Sewing Machine Co.,
Cleveland, O., or
St. Louis, Mo.

NEW and 2d-HAND.—
Send for Circular. Chas. PLACE
& CO., 60 Vesey st., New York.

MACHINISTS.

Illustrated Catalogue and Price List of all kinds of small Tools and Materials sent free to any address. GOODNOW & WIGHTMAN, 23 Cornhill, Boston, Mass.

P. BLAISDELL & CO.

ANUFACTURERS of the "BLAISDELL" PATENT DRILL PRESSES, with quick return motion, Agricultural Drills, Improved Engine Lathes, from 12 in. to 28 in. swing, Planers, Gear Cutters, Boring Mills, Hand Lathes, and other first-class Machinists' Tools.

Jackson st., Worcester, Mass.

Patent

BEDSTEAD FASTENING.

The Best, Cheapest, and Strongest FASTENING ever invented.

Rights for States and Territories for sale.

Address

JOHN DOMINGOS     
and                     BENJAMIN ESSIG,
Sacramento, Cal.

ENT, GOODNOW & CO.,

Boston, Mass., Publishers of "PATENT STAR", sell Patent Rights and goods of all kinds. Orders solicited.

AGENTS WANTED.

Send stamp for copy.

TO THE WORKING CLASS.—We are now prepared to furnish all classes with constant employment at home, the whole of the time or for the spare moments. Business new, light and profitable. Persons of either sex easily earn from 50c. to $5 per evening, and a proportional sum by devoting their whole time to the business. Boys and girls earn nearly as much as men. That all who see this notice may send their address, and test the business, we make this unparalleled offer: To such as are not well satisfied, we will send $1 to pay for the trouble of writing. Full particulars, a valuable sample which will do to commence work on, and a copy of The People's Literary Companion—one of the largest and best family newspapers published—all sent free by mail. Reader, if you want permanent, profitable work, address

D. C. ALLEN & CO., Augusta, Maine.

IMPORTANT

O  MACHINISTS.—The Best Metal for all Machine Uses is the MARTIN STEEL, made by The New Jersey Steel and Iron Co., Trenton, N. J. This steel is made by an entirely different process from any other and is tougher than wrought iron. It can be turned without annealing, being entirely free from hard spots. Every one who uses it pronounces it just what they have long wanted, for a multitude of uses, such as Crank Pins, Lathe Spindles and Screws, Cotton Machinery Rollers, Saw and Fan Spindles, etc., etc. Also, particularly adapted for Firebox Plates. Prices low. Send for further information, or a sample, stating use to which it is to be applied.

SAFETY HOISTING
Machinery.

OTIS, BROS. & CO.     
No. 309 BROADWAY, NEW YORK.          

Union Emery Wheels.

Solid and with Stone Center. UNION STONE CO., Boston, Mass. Branch Office, 93 Liberty st., N. Y. General Agents for the Am. Twist Drill Co.'s Superior Grinder and other Emery Wheel Machinery and Tools. Send for Circular.

WOODBURY'S PATENT

Planing and Matching

and Molding Machines, Gray & Wood's Planers, Self-oiling Saw Arbors, and other wood working machinery.

ICHARDSON, MERIAM & CO.,
Manufacturers of the latest improved Patent Daniels' and Woodworth Planing Machines, Matching, Sash, and molding, Tenoning, Mortising, Boring, Shaping, Vertical, and Circular Re-sawing Machines, Saw Mills Saw Arbors, Scroll Saws, Railway, Cut-off, and Rip-saw Machines, Spoke and Wood Turning Lathes, and various other kinds of Wood-working Machinery. Catalogues and price lists sent on application. Manufactory, Worcester, Mass.

Warehouse, 107 Liberty st., New York. 17 1

Reynolds'

TURBINE WATER WHEELS.

The Oldest and Newest. All others only imitations of each other in their strife after complications to confuse the public. We do not boast but quietly excel them all in staunch reliable, economical power. Beautiful pamphlet free.

Geo. TALLCOT,
96 Liberty st., New York.
Gearing, Shafting.     

Niagara Steam Pump.

CHAS. B. HARDICK,

Adams st., Brooklyn, N. Y.

ODELS, PATTERNS, EXPERIMENTAL, and other machinery, Models for the Patent Office, built to order by HOLSKE MACHINE CO., Nos. 528, 530, and 532 Water st., near Jefferson. Refer to Scientific American office. 14 tf

And Re-Sawing Machines, Wood and Iron Working Machinery, Engines, Boilers, etc. JOHN B. SCHENCK & SON, Matteawan, N. Y., and 118 Liberty st., New York.

ANTED—AGENTS, $20 PER DAY, TO sell the celebrated HOME SHUTTLE SEWING MACHINE. Has the under-feed, makes the "lock stitch" alike on both sides, and is fully licensed. The best and cheapest Family Sewing Machine in the market. Address

JOHNSON, CLARK & CO.,

Boston, Mass.; Pittsburgh, Pa.; Chicago, Ill., or St. Louis, Mo.

Milling Machine,

NDEX, STANDARD, UNIVERSAL, AND HORIZONTAL.—The largest variety to be found in the country, on hand and finishing. Workmanship, Material, and Design unsurpassed. Machines on exhibition at Fair of American Institute. UNION VISE CO. OF BOSTON. Office 80 Milk st. Works at Hyde Park, Mass.

Andrew's Patents.

Noiseless, Friction Grooved, Portable, and Warehouse Hoisters.

Friction or Geared Mining & Quarry Hoisters. Smoke-burning Safety Boilers.

Oscillating Engines, Double and Single, 1-2 to 100-Horse power.

Centrifugal Pumps, 100 to 100,000 Gallons per Minute, Best Pumps in the World, pass Mud, Sand, Gravel, Coal, Grain, etc., without injury.

All Light, Simple, Durable, and Economical.

Send for Circulars.

WM. D. ANDREWS & BRO.,
414 Water street, New York.

A MONTH! EMPLOYMENT! EXTRA INDUCEMENTS! A premium Horse and Wagon for Agents. We desire to employ agents for a term of seven years, to sell the Buckeye $20.00 Shuttle Sewing Machine. It makes a stitch alike on both sides, and is the best low-priced licensed machine in the world. W. A. HENDERSON & CO., Cleveland, Ohio, or St. Louis, Mo.

LLCOTT'S LATHES, for Broom, Hoe, and
 Rake Handles, for sale by

L. W. POND, 98 Liberty st., New York.

NRIVALLED Hand Saw Mill, Self-feeding, with ease. Rip 3-in. lumber; guaranteed do work of 3 men. The only hand saw machine known, does as represented. Thousands in use. Send for circular.

WM. H. HOAG, Sole Manufacturer, 214 Pearl st. N. Y.

Best in the World—$290. Sent on trial—See large cut and terms in Scientific American. Oct. 1st 1870.

Dovetailing Machine.

ILL MAKE 400 DRAWERS PER DAY. See Scientific American, Jan. 11, '71. H. H. EVARTS, 93 Liberty st.; TREVOR & CO., Lockport N. Y.

CIRCULAR SAW MILLS.

AYS & NEWMAN'S PATENT DOUBLE PARALLEL EDGERS, FOSTER'S PATENT LOG-CANTING MACHINES, and Sawmill Machinery generally, manufactured by the Washington Mowing Machine Company.

LEROY MOWRY, Agent,
Sandy Hill, Wash. Co., N. Y.

Send for Illustrated Circulars and Price Lists.

To Electro-Platers.

ATTERIES, CHEMICALS, AND MATERIALS, in sets or single, with books of instruction, manufactured and sold by THOMAS HALL, Manufacturing Electrician, 19 Bromfield street, Boston, Mass. Illustrated catalogue sent free on application.

RIZE MEDAL SCROLL SAW.—

THOS. L. CORNELL, Derby, Conn.

PATENT RIGHTS SOLD ON COMMISSION.

By E. E. ROBERTS & CO., Consulting Engineers, 15 Wall St., N. Y.

Send Stamp for Circular.

Newspaper Advertising.

A Book of 125 closely printed pages, lately issued, contains a list of the best American Advertising Mediums giving the names, circulations, and full particulars concerning the leading Daily and Weekly Political and Family Newspapers, together with all those having large circulations, published in the interest of Religion, Agriculture, Literature, etc., etc. Every Advertiser, and every person who contemplates becoming such, will find this book of great value. Mailed free to any address on receipt of 25c.

GEO. P. ROWELL & CO.,

Publishers, No. 40 Park Row, New York.

The Pittsburgh (Pa.) Leader, in its issue of May 29, 1870 says:

"The firm of G. P. Rowell & Co., which issues this interesting and valuable book, is the largest and best Advertising Agency in the United States, and we can cheerfully recommend it to the attention of those who desire to advertise their business SCIENTIFICALLY and SYSTEMATICALLY in such a way: that is, so as to secure the largest amount of publicity for the least expenditure of money."

THE CELEBRATED

Cold-rolled Shafting.

his Shafting is in every particular superior to any turned Shafting ever made. It is the most ECONOMICAL SHAFTING to buy, being so very much stronger than turned Shafting. Less diameter answers every purpose, causing a great saving in coupling, pulleys and hangers. It is perfectly round, and made to Whitworth Gage. All who give it a trial continue to use it exclusively. We have it in large quantities. Call and examine it, or send for price list.

Address

GEORGE PLACE & CO.,
126 and 128 Chambers st., New York.

N. Y. Machinery Depot.

EORGE PLACE & CO., Manufacturers and Dealers in Wood and Iron Working Machinery, of every description, Stationary and Portable Engines and Boilers, Leather and Rubber Belting, and all articles needful in Machine or Railroad Repair Shops. 126 and 128 Chamber st., New York.

Sturtevant Blowers.

hese are in every particular the best and most perfect Blower ever made. A full assortment of every size on hand, ready to deliver.

Address

GEORGE PLACE & CO., 126 and 128 Chamber St., New York.

he Union Iron Mills, Pittsburgh, Pa. The attention of Engineers and Architects is called to our improved Wrought-iron Beams and Girders (patented), in which the compound welds between the stem and flanges, which have proved so objectionable in the old mode of manufacturing, are entirely avoided, we are prepared to furnish all sizes at terms as favorable as can be obtained elsewhere. For descriptive lithograph address

Carnegie, Kloman & Co., Union Iron Mills, Pittsburgh, Pa.

ILL OWNERS, ATTENTION.—Our Turbine Water Wheels still ahead. No complications. Simple, compact, and durable. Prices moderate.

VALENTINE & CO., Ft. Edward, N. Y.

HE WOODWARD STEAM-PUMP MANUFACTURING COMPANY, Manufacturers of the Woodward Pat. Improved Safety Steam Pump and Fire Engine, Steam, Water, and Gas Fittings of all kinds. Also Dealers in Wrought-iron Pipe, Boiler Tubes, etc. Hotels, Churches, Factories, & Public Buildings heated by Steam. Low Pressure. Woodward Building, 76 and 78 Center st., cor. of Worth st. (formerly of 77 Beekman st., N. Y.) All parties are hereby cautioned against infringing the Pat. Right of the above Pump. G. M. WOODWARD, Pres't.

UERK'S WATCHMAN'S TIME DETECTOR.—Important for all large Corporations and Manufacturing concerns—capable of controlling with the utmost accuracy the motion of a watchman or patrolman, as the same reaches different stations of his beat. Send for a Circular.

J. E. BUERK,     
P. O. Box 1,057 Boston, Mass.

N. B.—This detector is covered by two U. S. Patents. Parties using or selling these instruments without authority from me will be dealt with according to law.

ORTABLE STEAM ENGINES, COMBINING the maximum of efficiency, durability and economy, with the minimum of weight and price. They are widely and favorably known, more than 750 being in use. All warranted satisfactory or no sale. Descriptive circulars sent on application. Address

J. C. HOADLEY & CO., Lawrence, Mass. 46. Cortlandt st., New York.

MEN, WOMEN, BOYS and GIRLS who engage in our new business make from $5 to $10 per day in their own localities. Full particulars and instructions sent free by mail. Those in need of permanent, profitable work, should address at once. George Stinson & Co., Portland, Maine.

Agents! Read This!

E WILL PAY AGENTS A SALARY OF $30 per week and expenses, or allow a large commission, to sell our new and wonderful inventions.

Address

M. WAGNER & CO., Marshall, Mich.

EPILEPSY OR FITS. A sure cure for this distressing complaint is now made known in a Treatise of 48 octavo pages, on Foreign and Native Herbal Preparations, published by Dr. O. Phelps Brown. The prescription was discovered by him in such a providential manner that he cannot conscientiously refuse to make it known, as it has cured everybody who has used it for Fits, never having failed in a single case. The ingredients may be obtained from any druggist. Persons desiring a copy may address Dr. O. Phelps Brown, No. 21 Grand Street, Jersey City, N. J., and it will be sent by return mail.

OOD-WORKING MACHINERY GENERALLY. Specialties, Woodworth Planers and Richardson's Patent Improved Tenon Machines. Nos. 24 and 26 Central, corner Union st., Worcester, Mass. Warerooms 42 Cortlandt st., New York.

WITHERBY RUGG, & RICHARDSON.

INCINNATI BRASS WORKS.—Engineers and Steam Fitters' Brass Work, Best Quality at very Low Prices.

F. LUNKENHEIMER, Prop'r.

Hinkley Knitting Machine.

he simplest, cheapest, and best in use.
Has but one needle! A child can run it!

Agents Wanted in Every Town.

Send for Circular and Sample Stocking to

HINKLEY KNITTING MACHINE CO., Bath, Me.

ATHE CHUCKS—HORTON'S PATENT

from 4 to 36 inches. Also for car wheels. Address

E. HORTON & SON, Windsor Locks, Conn.

ILICATE OF SODA, IN ITS VARIOUS forms, manufactured as a specialty, by Philadelphia Quartz Co., 783 South 2d st. Philadelphia, Pa.

Advertisements will be admitted on this page at the rate of $1.00 per line for each insertion. Engravings may head advertisements at the same rate per line, by measurement, as the letter-press.

An Important Fact.

MARVIN & CO.'S

SPHERICAL SAFES

Have never been Robbed.

Hundreds are in use by Banks, Bankers, and Merchants.

L: L: SMITH & CO.,

Nickel Platers,

6 HOWARD ST., New York,
Between Elm and Centre.

SAVE YOUR FUEL.

THE ORIGINAL L. B. TUPPER'S

Furnace Grate Bar.

Guaranteed to make from 5 to 10 lbs. more steam, with less fuel, than any other bar. Adapted to all kinds of fuel; no alteration of furnace required. Received Silver Medal at Cincinnati Industrial Exposition, 1870; Silver Medal at Worcester Co. Mechanics' Association, 1866; Medal and Diploma at American Institute Fair, 1870; Honorable Mention at Paris Exposition. Send for descriptive pamphlet. Now in use in 10,000 places.

L. B. TUPPER, 120 West st., New York.

Pyrometers.

or Blast Furnaces, Bakers' Ovens, Boiler Flues, Superheated Steam Oil Stills, Zinc and Lead Baths.

E. BROWN, 311 Walnut st., Philadelphia.

Agents Wanted.

o sell the UNIVERSAL SASH LOCK.
It is Self-Acting and Burglar-Proof. Send stamp for circulars. Carpenters and Builders can make from $10 to $20 selling them. Address G. S. LACEY, care of Patterson Brothers, No. 27 Park Row, New York city.

PERM OIL, strictly pure, for SEWING MACHINES and fine Machinery, in bottles and bbls. Sample by mail, 25 cts. W. F. NYE, New Bedford, Mass.

The Reasons Why

OOLEY'S YEAST POWDER is preferred to any other Baking Powder in market, are owing to its perfect purity, quality, quantity, and economy. The ingredients are strictly free from deleterious substances, and hence the full strength of each is obtained, and the results are uniform every time it is used. This cannot be the case in those of ordinary manufacture, and for proof of our assertion, we ask those who have never used Dooley's Yeast Powder to give it a trial. Your grocer keeps it. DOOLEY & BROTHER, Manufacturers, 69 New st., New York.

ATENT CUTTERS for the Teeth of Gear Wheels, which can be sharpened by grinding, without changing their form. Cutters made on this plan will last many times as long as those of the common form, with the advantage of being always ready for use. Descriptive circular, with price list, sent per mail on application. BROWN & SHARPE M'F'G CO., Providence, R. I.

A SPRING OF WATER AT THE TOP OF THE HOUSE.

OUGHTON'S AUTOMATIC WATER ELEVATOR, patented Feb. 7, 1871, No. 111,542, delivers water from the well or cistern in the tank at the top of the house. Is operated by the fire in the kitchen range without additional fuel; is simple in construction, reliable and cheap. Reliable parties wanted to introduce them into use in all the States except New England. For drawings and full description address

CHARLES HOUGHTON, 41 State St., Boston, Mass.

HORT HAND.—150 words per minute in four weeks. Send stamp for Circular.

Prof. GRAY, P. O. Box 4847, New York.

WATCHES THAT ARE WATCHES.

We shall be pleased to send our DESCRIPTIVE PRICE LIST of Genuine WALTHAM WATCHES, together with an Illustrated pamphlet entitled a History of Watchmaking, to all who send us their address. No matter how remote you are from New York, we can sell you a Watch at the same price as if you were here. When you write mention that you saw this notice in the Scientific Amer.

HOWARD & CO., 865 Broadway, N. Y.

Engines, Tools, Machinery, etc.,

FOR SALE AT THE

Novelty Iron Works,

Foot of East 12th street, New York city,

MBRACING Engines, Planers, Lathes, Smith and Boiler Makers' Tools, and Machinery and Patterns of the most approved kinds, etc. Also, 1 High Pressure Engine, 12-inch diameter by 30-inch stroke: 2 Stevenson's Patent Turbine Water Wheels, 66-inch diameter, and 1 Marine Beam Engine, 60-inches by 10-feet stroke. Send for catalogue.

JNO. S. SCHULTZE,

RECEIVER OF THE NOVELTY IRON WORKS.
New York, March 1, 1871.

OR CIRCULAR ILLUSTRATING A NEW and greatly improved TURBINE WHEEL, believed to be the best and cheapest in the market, apply to

PUSEY JONES & CO.,     
Wilmington Delaware

OTCHKISS BRICK AND TILE MACHINE.—Send for Circular to Room 7, No. 19 Cliff street, New York.

UNION

Spoke Works.

POKES, RIMS, AND PLOW HANDLES. All goods warranted seasoned, and of the best quality.

JOHN G. DAVIS & SON,     
Southwest cor. of Leopard and Otter sts., Philadelphia.

Vertical & Horizontal CORN MILLS. 30-inch grinds 30 bus. per hour, and 20-in. 15. Price $280 and $140.

EDWARD HARRISON,     
New Haven, Conn.

IRON STEAMSHIP BUILDERS.

NEAFIE & LEVY,

PENN WORKS,

MARINE ENGINES, BOILERS, ETC.,
PHILADELPHIA, PA.

Swain Turbine.

"Our Low-Water Wheel from this on"

ILL DO TEN PER CENT MORE WORK on small streams, in a dry season, than any wheel ever invented. Gave the best results, in every respect, at the Lowell Tests.

For Report of tests at Lowell, with Diagrams and Tables of Power, address

THE SWAIN TURBINE CO.,     
North Chelmsford, Mass.

UILDING PAPER

OF THREE GRADES.

TARRED SHEATHING,

For outside of Studding, under Clapboards. A non-conductor of cold, heat, and dampness.

PREPARED PLASTERING BOARD,

a cheap and perfect substitute for lath and plaster; makes a smooth, warm, and substantial wall, at less than half the usual cost.

DOUBLE THICK ROOFING

and Quartz Cement, make a good water and fire-proof roof, for less than $3.50 per square.

     Sample and Circulars sent free, by ROCK RIVER PAPER CO.,     
Chicago; or,

B. E. HALE,     
22 & 24 Frankfort street, N. Y.

RON PLANERS, ENGINE LATHES, Drills, and other Machinists' Tools, of superior quality, on hand, and finishing. For sale low. For Description and Price address NEW HAVEN MANUFACTURING CO. New Haven Conn.

RUMPFF & LUTZ,

MPORTERS and Manufacturers of Aniline Colors and Dyestuffs, Colors for Paperhangers and Stainers. Reliable recipes for Dyeing and Printing on Silk, Wool, and Cotton. All new improvements in the art of Dyeing, and new Colors are transmitted to us by our friends in Europe, as soon as they appear.

42 Beaver street, New York.

PAGE'S

Patent Tanned Belting

Runs 25 per cent more machinery, is nearly twice as strong, and wears 50 per c. longer than any other. Send for circular containing price lists and discounts.

Page Brothers, Sole Manuf'rs, Franklin, N. H.

From 4 to 500 horse power including Corliss Engines, Slide Valve Stationary Engines, Portable Engines, etc. Also, Circular Saw Mills, Shafting, Pulleys etc. Wheat and Corn Mills, Circular Saws, etc.
Send for Price List.

WOOD & MANN
Steam Engine Company,
WORKS—UTICA, N. Y.

Principal Office—42 Cortlandt st., New York.

DIAMOND POINTED

STEAM DRILLS.

OR ALL KINDS OF ROCK DRILLING, Mining, Quarrying, Tunneling, Railroad Grading, Well Boring, Prospecting, etc. Fifty to Seventy-five per cent of cost and time of hand labor saved. "Test Cores," in form of solid cylinders of rock or mineral taken out of mines from any depth not exceeding one thousand feet, showing true value, stratification, etc. No percussion. Never require sharpening. FIRST PREMIUMS awarded in both American and Europe. Illustrated Circulars sent on application. Beware of infringements.

SEVERANCE & HOLT,
Proprietors and Manufacturers,
Office 16 Wall st., New York.

NICKEL PLATING.

Beardslee Nickel and Manufacturing Co.,
82 and 84 Fulton St., Brooklyn, N. Y.

IGHTS sold for the use of, and instruction given in the best method of Nickel Plating. An experience of twelve years enables us to offer a solution and apparatus that remain practically unchanged for years, in constant use.

FIRST PREMIUM AWARDED
us by the American Institute in 1870. Critical examination of our work solicited. All goods sent to our Factory will meet with prompt attention.

New York Office—4 Dev st., Room 2.

Agents wanted.

B EST DAMPER REGULATOR for Steam Boiler. Send for Circulars. MURRILL & KEIZER, Baltimore, Md.

AT. SOLID EMERY WHEELS AND OIL STONES, for Brass and Iron Work, Saw Mills, and Edge Tools. Northampton Emery Wheel Co., Leeds, Mass.

No

LIVE MECHANIC

Can afford to be without some of

BAIRD'S

FOR PRACTICAL MEN.

My new and enlarged Catalogue of PRACTICAL AND SCIENTIFIC BOOKS, 82 pages, 8vo., will be sent, free of postage, to any one who will favor me with his address.

HENRY CAREY BAIRD,
Industrial Publisher, 406 Walnut St.,
Philadelphia.

THE FIFTH GRAND STATE FAIR

OF THE

Mechanics and Agricultural State Association of Louisiana

ill be held on the Fair Grounds of the Association, in the city of New Orleans, commencing Saturday, April 8, 1871, and continuing nine days. Exhibitors are invited from every section of America. Railroads, steamships, and other transportation lines, as named in the Premium Catalogues, will carry exhibitors and their wares to and from the Fair at one half the usual rates. For further information see Premium Catalogue, which will be sent to any address free of charge.

LUTHER HOMES, Secretary and Treasurer, New Orleans, La.

WIRE ROPE.

JOHN A. ROEBLING'S SONS,

MANUFACTURERS, TRENTON, N. J.

or Inclined Planes, Standing Ship Rigging, Bridges, Ferries, Stays, or Guys on Derricks & Cranes, Tiller Ropes, Sash Cords of Copper and Iron, Lightning Conductors of Copper. Special attention given to hoisting rope of all kinds for Mines and Elevators. Apply for circular, giving price and other information. Send for pamphlet on Transmission of Power by Wire Ropes. A large stock constantly on hand at New York Warehouse,

No. 117 Liberty street.

$732 IN 31 DAYS,

ade by one Agent, selling Silver's Broom. 100,000 in use. Recommended by Horace Greeley and Am. Agriculturist. One county for each Agent. Prices Reduced. C. A. CLEGG & CO., New York, or Chicago, Ill.

American Saw Co., Manufacturers of

And Perforated Circular and Long Saws. Also Solid Saws of all kinds. No. 1 Ferry St., cor. Gold street, New York. Branch Office for Pacific Coast, No. 606 Front street, San Francisco, Cal.

MACHINE SCREWS,

or all purposes, with square, round, and hexagon heads. A. W. GIFFORD & CO., Worcester, Mass.

The fact that this Shafting has 75 per cent greater strength, a finer finish, and is truer to gage, than any other in use, renders it undoubtedly the most economical. We are also the sole manufacturers of the Celebrated Collins Pat. Coupling, and furnish Pulleys, Hangers, etc., of the most approved styles. Price Lists mailed on application to

JONES & LAUGHLINS,     
120 Water street, Pittsburgh, Pa.

Stocks of this Shafting in store and for sale by
FULLER, DANA & FITZ, Boston, Mass.
GEO. PLACE & CO., 126 Chambers street, N. Y.

Steam Super-Heater,

or Saving Fuel, and supplying Dry Steam of any desired temperature. Safe, durable, easily attached. H. W. BULKLEY Engineer, 98 Liberty st., N. Y.

OR CIRCULAR OF TREMPER'S PATENT VARIABLE CUT-OFF, for high and low pressure Steam Engines, address

PUSEY JONES & CO. Wilmington Delaware.

First-class Medal, World's Fair, London, 1862. And American Institute Fair, New York, 1869.

Over 1,000 Boilers in Use.

Weston's Patent Differential

PULLEY BLOCKS.

75,000 IN USE.

HARRISON BOILER WORKS,
Philadelphia, Pa.

or, JOHN A. COLEMAN, Agent,     
110 Broadway, New York, and 139 Federal st., Boston.

DOYLE'S

PATENT DIFFERENTIAL

Pulley Blocks,

The celebrated Doyle Blocks have taken premiums over the differential Blocks of all other makers at every Fair where they have been exhibited at the same time. When you buy, see that the Blocks are marked J. J. DOYLE. Pat. Jan. 8, 1861. All others are infringements.

SAMUEL HALL'S SON & CO.,
SOLE MANUFACTURERS.
229 West 10th street, New York.

For Forge and
Mill Work. The M. & T. SAULT CO. Steam Engine Builders & Founders, New Haven, Conn.

EMPLOYMENT.

A MONTH with Stencil Dies.
Samples free. Address

S. M. SPENCER Brattleboro Vt.

THE

Tanite Emery Wheel.

Does not Glaze, Gum, Heat, or Smell. Address

THE TANITE CO.,

Stroudsburg, Monroe Co., Pa.

S. & J. GEAR & CO., Boston, furnish every description of Wood and Iron Working Machinery and Supplies. The best in use, regardless of maker, at lowest possible rates.

Working Models

And Experimental Machinery, Metal, or Wood, made to order, by

J. F. WERNER 62 Center st. N. Y.

cNAB & HARLAN, Manufacturers of Wrought Iron Pipe and Fittings, Brass Cocks, Valves, Gage Cocks, Whistles, Water Gages, and Oil Cups, Harlin's Patent Lubricator, Plumber's Brass Work, Getty's Patent Pipe Cutter, Getty's Patent Proving Pump and Gage. No. 86 John st., New York.

THE

Allen Engine Works,

Fourth avenue and 130th and 131st sts., New York city Manufacturers of

• Porter's Governor,
• The Allen Boiler, and
• Standard Straight Edges, Surface Plates, and
• Angle Plates.

Four first premiums were awarded to us at the Fair of the American Institute, 1870.

Send for our illustrated circular.

L. W. Pond—New Tools.

EXTRA HEAVY AND IMPROVED PATTERNS.

ATHES, PLANERS, DRILLS, of all sizes; Vertical Boring Mills, ten feet swing, and under; Milling Machines, Gear and Bolt Cutters; Hand Punches and Shears for Iron.

Office and Warerooms, 98 Liberty st., New York; Works at Worcester, Mass.

A. C. STEBBINS, New York, Agent.

WATER-PROOF

BUILDING PAPER

(No Tar), for Roofing, Sheathing, Ceilings, Oil-cloths, Shoe Stiffenings, Tags, Trunks, Cartridges, Blasting, Pass-book Covers, Grain and Flour Bins, etc., for sale by

J. HUNTER, Jr.,

Paper Warehouse, 59 Duane st., New York.

Scientific American

For 1871.

TWENTY-SIXTH YEAR.

VERY NUMBER is printed on fine paper, and elegantly illustrated with original engravings representing

New Inventions, Novelties in Mechanics,
Manufactures, Chemistry, Photography,
Architecture. Agriculture.
Engineering, Science,
and Art.

Farmers, Mechanics, Inventors, Engineers, Chemists Manufacturers and People of all Professions or Trades will find the

SCIENTIFIC AMERICAN

of great value and interest.

The Editors are assisted by many of the ablest American and European Writers, and having access to all the leading Scientific and Mechanical Journals of the world, the columns of the Scientific American are constantly enriched with the choicest Information.

An Official List of all the Patents Issued is published Weekly.

The Yearly Numbers of the Scientific American make two splendid Volumes of nearly One Thousand Pages equivalent in size to FOUR THOUSAND ordinary book pages.

SPECIMEN COPIES SENT FREE.

Terms—$3.00 a year, $1.50 half year; Clubs of Ten Copies for one year, at $2.50 each, $25.00,

With a SPLENDID PREMIUM to the person who forms the Club, consisting of a copy of the celebrated Steel Plate Engraving, "Men of Progress."

Address

                    MUNN & CO.,

Publishers of the Scientific American.
37 Park Row, New York.     

HE "Scientific American" is printed with CHAS. ENEU JOHNSON & CO.'S INK. Tenth and Lombard sts. Philadelphia, and 59 Gold st. New York.