Any patent issued since November 27, 1867, at which time the Patent Office commenced printing the drawings and specifications, may be had by remitting to this office $1.

A copy of the claims of any patent issued since 1638 will be furnished for $1.

When ordering copies, please remit for the same as as above, and state name of patentee, title of invention, and date of patent.

A pamphlet, containing full directions for obtaining United States patents, sent free. A handsomely bound Reference Book, gilt edges, contains 140 pages and many engravings and tables important to every patentee and mechanic, and is a useful handbook of reference for everybody. Price 25 cents, mailed free.

Address

MUNN & CO.,
Publishers SCIENTIFIC AMERICAN
37 Park Row, N.Y.

BRANCH OFFICE - Corner of F and 7th Streets, Washington, D.C.

EMERSON'S PATENT DAMASCUS TEMPERED SAWS

Patent Planer, Clipper, Lumberman's Clipper, from clipper cross-cut, Universal Adjustable Saw Swage, Band Saws for Saw Mills and re-sawing, and solid saws of all kinds. Are superior to all others, Extra Thin Saws a specialty. Send your full address, plainly written, for Price List and Circular to Emerson, Smith & Co., Beaver Falls, Pa., Successors to Emerson, Ford & Co.

ROOTS' PATENT PORTABLE FORGE.

ADAPTED TO EVERY VARIETY OF WORK.

THE ONLY FORGE WITH FORCE BLAST BLOWER.

THE ONLY EFFECTIVE FORGE MADE.

P.H. & F.M. ROOTS, Manuf's, CONNERSVILLE, IND.
S.S. TOWNSEND, Gen'l Ag't, 31 Liberty St., NEW YORK.

First Premium ahead of All at Centennial, Hand and Self-Inking.

The Excelsior Presses

Do Your Own Printing
Save money! Do more advertising.

$3 Press for cards, labels, envelopes, etc. Large sizes for large work. Anybody can work them, have good pastime for spare hours, and can make money by taking in small Jobs.

BOYS have much fun and make money very fast at printing cards, etc., Send two stamps for catalogue, to Mfrs, KELSEY & CO. Meriden, Conn.

MACHINISTS' TOOLS.

NEW AND IMPROVED PATTERNS.
Send for new illustrated catalogue.
Lathes, Planers, Drills, etc.
NEW HAVEN MANUFACTURING CO.,
New Haven, Conn.

HARTFORD
STEAM BOILER

Inspection & Insurance

COMPANY.

W.B. Franklin, V. Pres't J.M. Allen, Pres't
J.B. Pierce Sec'y.

ROCK DRILLING MACHINES
AND
AIR COMPRESSORS

MANUFACTURED BY Burleigh Rock Drill Co.
SEND FOR PAMPHLET. FITCHBURG MASS.

Niagara Steam Pump Works. ESTABLISHED 1826. CHARLES B. HARDICK, No. 23 Adams Street, BROOKLYN, N.Y.

NON-COMBUSTIBLE STEAM BOILER AND PIPE

COVERING

WITH "AIR SPACE" IMPROVEMENT. Saves 10 to 20 per cent. CHALMERS SPENCE CO., Foot E. 9th St. N.Y.; 1202 N. 2d St., St. Louis, Mo.

The fact that this shafting has 75 per cent. greater strength, a finer finish, and is truer to gauge, 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 list mailed on application to

JONES & LAUGHLINS,
Try Street, 2d and 3rd Avenues, Pittsburgh, Pa.
190 S. Canal Street, Chicago, Ill., and Milwaukie, Wis.

Stocks of this shafting in store and for sale by FULLER. DANA, & FITZ, Boston, Mass. GEO. PLACE & CO. 121 Chambers St., N.Y.

KNOWLES
STEAM PUMP WORKS,

92 & 94 Liberty St., New York.

Great reduction in prices. Send for catalogue. The "Knowles" has always been the best steam pump made.

PUNCHING
PRESSES

Drop Hammers and Dies, for working Metals, etc. THE STILES & PARKER PRESS CO., Middletown, Conn.

MACHINERY OF IMPROVED STYLES FOR making SHINGLES, HEADING and STAVES; also GUAGE LATHES for TURNING HANDLES. Sole makers of Law's Pat. Shingle and Heading Sawing Machine. Address TREVOR & CO., Lockport, N.Y.

CHLORIDE OF CALCIUM.

FOR SALE VERY CHEAP.

RANSOME, 10 Bush Street, San Francisco, Cal.

PERFECT

NEWSPAPER FILE

The Koch Patent File, for preserving newspapers, magazines, and pamphlets, has been recently improved and price reduced. Subscribers to the SCIENTIFIC AMERICAN and SCIENTIFIC AMERICAN SUPPLEMENT can be supplied for the low price of $1.50 by mail, or $1.25 at the office of this paper. Heavy board sides; inscription "SCIENTIFIC AMERICAN," in gilt. Necessary for every one who wishes to preserve the paper.

Address

MUNN & CO.,

Publishers SCIENTIFIC AMERICAN.

To appear end of February,

The United States

BUSINESS DIRECTORY

FOR 1877.

This Directory contains over 400,000 names of persons in all kinds of business. Arranged alphabetically according to States, and classified according to business. It is a valuable aid to the Merchant, Manufacturer, and Mechanic, for correspondence or the distribution of circulars. The edition of 1877 is the third year of issue, and has already received a largely increased patronage from the business public.

Price to parties who send their order before the book is issued, $7.00.

GEO. DE COLANGE & CO., Publishers,

8 Bond St., New York.

ELOCUTIONIST'S JOURNAL gives choicest standard and new pieces for professional and amateur Readers and Speakers, and interesting articles on appropriate subjects. Just the thing wanted. 10 cts. of any newsdealer or by mail. JESSE HANEY & CO., 119 Nassau Street, New York.

NOYE'S
MILL FURNISHING WORKS

are the largest in the United States. They make Burr Millstones, Portable Mills, Smut Machines, Packers, Mill Picks, Water Wheels, Pulleys and Gearing, specially adapted to flour mills. Send for Catalogue.

J.T. NOYE & SON, Buffalo, N.Y.