Scientific American, Volume XLIII., No. 25, December 18, 1880

툆
Scientific American, Volume XLIII., No.?by Various

The Project Gutenberg EBook of Scientific American, Volume XLIII., No.
25, December 18, 1880, by Various This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at www.gutenberg.org
Title: Scientific American, Volume XLIII., No. 25, December 18, 1880 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures.
Author: Various
Release Date: April 15, 2007 [EBook #21081]
Language: English
Character set encoding: ISO-8859-1
*** START OF THIS PROJECT GUTENBERG EBOOK SCIENTIFIC AMERICAN ***

Produced by Verity White, Juliet Sutherland and the Online Distributed Proofreading Team at http://www.pgdp.net

[Illustration]

SCIENTIFIC AMERICAN

(Entered at the Post Office of New York, N. Y., as Second Class Matter)
A WEEKLY JOURNAL OF PRACTICAL INFORMATION, ART, SCIENCE, MECHANICS, CHEMISTRY, AND MANUFACTURES.
NEW YORK, DECEMBER 18, 1880.
Vol. XLIII., No. 25. [New Series.]
$3.20 per Annum. [POSTAGE PREPAID.]
* * * * *

CONTENTS.
(Illustrated articles are marked with an asterisk.)
Air engine, new 385 Amateur mechanics* 390 American Institute of Architects 389 Architects, American Institute 389 Arctic winter, characteristics of 393 Aquarium (29) 395 Balance attach. for valves* 386 Band saw, hand power* 387 Barometer, chemical (15) 394 Battery, Leclanche, to renew (13) 394 Beetle, Hercules, the* 391 Belts, capacity of (12) 394 Business colleges* 383, 388 Carbons, to solder (20) 395 Chinese women's feet* 393 Chisels, tempering 389 Colleges, business* 383, 388 Engine, air, new 385 Engine, steam, single-acting* 390 Eruption of Mauna Loa 385 Exhibition of bathing appliances 393 Feet, Chinese women's* 393 Fires--causes and prevention 384 Glass spinning and weaving 385 Gun, submarine, new 387 Harbor at Montreal, the 387 Hercules beetle, the* 391 Horse-power of turbines (12) 394 Ice at high temperatures 393 Ice, removing from railroads* 387 Induction coil for transmitter (14) 394 Induction coil, small (26) 395 Invention, schools of 393 Inventions, miscellaneous 390 Inventions, recent 387 Knots, learning to tie 392 Leaves, variegation of 392 Light, what is? 384 London underground railway 389 Mantis, the embrace of the 391 Mechanics, amateur* 390 Montreal, the harbor at 387 Noise, to deaden (9) 394 Nut, safety, improved* 386 Packard's Business College* 383, 388 Patents, decisions relating to 393 Petroleum prospects 386 Photos, to color (10) 394 Poultry raising, mechanical 391 Railway, underground, London 389 Safety nut, improved* 386 Safety valve, improved* 386 Schools of invention 393 Screw-cutting foot lathe (11) 394 Steamers, Collins line of 393 Steam heating, return pipe (17) 394 Steel, to tin (38) 395 Submarine gun, new 387 Sun dial, to adjust (27) 395 Telegraph insulator, new* 387 Telegraph wires underground 385 Valve, safety, improved* 386 Valves, balance attachment for* 386 Vanilla, cinnamon, cocoanut 392 Vennor's winter predictions 389 Vessels, sunken, raising 386 Winter predictions, Vennor's 389 Zinc, to amalgamate (23) 395
* * * * *

SCIENTIFIC AMERICAN.
ESTABLISHED 1845.
MUNN & CO., Editors and Proprietors.
PUBLISHED WEEKLY AT NO. 37 PARK ROW, NEW YORK.
O. D. MUNN. A. E. BEACH.
* * * * *
TERMS FOR THE SCIENTIFIC AMERICAN.
One copy, one year postage included $3 20
One copy, six months, postage included 1 60
Clubs.--One extra copy of THE SCIENTIFIC AMERICAN will be supplied gratis for every club of five subscribers at $3.20 each: additional copies at same proportionate rate. Postage prepaid.
Remit by postal order. Address
MUNN & CO., 37 Park Row, New York.
To Advertisers--The regular circulation of the Scientific American is now Fifty Thousand Copies weekly. For 1880 the publishers anticipate a still larger circulation.
The Scientific American Supplement
Is a distinct paper from the Scientific American. THE SUPPLEMENT is issued weekly. Every number contains 16 octavo pages, uniform in size with Scientific American. Terms of subscription for Supplement, $5.00 a year, postage paid, to subscribers. Single copies, 10 cents. Sold by all news dealers throughout the country.
Combined Rates--The Scientific American and Supplement, will be sent for one year, postage free, on receipt of seven dollars. Both papers to one address or different addresses as desired.
The safest way to remit is by draft, postal order, or registered letter.
Address MUNN & CO., 37 Park Row, N. Y.
Scientific American Export Edition.
The Scientific American Export Edition is a large and splendid periodical, issued once a month. Each number contains about one hundred large quarto pages, profusely illustrated, embracing (1.) Most of the plates and pages of the four preceding weekly issues of the Scientific American, with its splendid engravings and valuable information; (2.) Commercial, trade, and manufacturing announcements of leading houses. Terms for Export Edition, $5.00 a year, sent prepaid to any part of the world. Single copies 50 cents. Manufacturers and others who desire to secure foreign trade may have large, and handsomely displayed announcements published in this edition at a very moderate cost.
The Scientific American Export Edition has a large guaranteed circulation in all commercial places throughout the world. Address MUNN & CO., 37 Park Row, New