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.

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A Cyclopedia of Mechanics and Engineering,

FOR SALE. The few copies of the Author's Extra Edition of Prof. R.H.
Thurston's Report on Machinery and Manufactures at the Great
International Exhibition, 1873, with an account of European
manufacturing districts.

The volume contains over 450 pages, and contains 223 wood-cuts and
plates.

Please send orders for copies at once. Price, $4.00.

F.T. THURSTON,
Civil and Mechanical Engineer.
HOBOKEN, N.J.

* * * * *

TUBE CLEANERS

for cleaning Boiler Tubes. THE NATIONAL STEEL TUBE CLEANER Co. 814 E.
9th 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.

* * * * *

[Illustration:
TO INVENTORS
AND MANUFACTURERS
]

FOLLOWS & BATE, Manchester, England, Hardware and Machinery Merchants,
are prepared to buy American Goods for Cash, and to act as Sole
Wholesale Agents.

* * * * *

PUNCHING PRESSES

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

* * * * *

ALCOTT LATHES, for Broom, Rake and Hoe Handles.

S.C. HILLS, 78 Chambers St., N.Y.

* * * * *

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 of