ll 
SCIEN Gr: 
Vol. XXIIf. No. 577 
Probably you take 
THE 
Electrical Engineer. 
Most people interested in Electricity 
do. 
If you do not, now is a good time to 
begin. 
It is published every Wednesday. 
Subscription, $3.00 per year. 
You can try it three months for fifty 
cents. 
Address: 
®The Electrical Engineer, 
203 Broadway. - - - New York. N Y 
THE 
AMERICAN 
BELL TELEPHONE 
(COMPANY, 
125 Milk Street, 
Boston, Mass. 
This company owns Let- 
ters-Patent No. 463,569, 
granted to Emile Berliner 
November 17, 1891, fora 
combined telegraph and 
telephone, and controls 
Letters-Patent No. 
MAAR. PCA MGOG) wo) 
Thomas A. Edison May 
3, 1892, for a speaking 
telegraph, which patents 
cover fundamental inven- 
tions and embrace all 
forms of microphone 
transmitters and of car- 
bon telephones. 
SCIENCE CLUBBING RATES. 
10% DISCOUNT. 
We will allow the above discount to any 
subscriber to Science who will send us an 
order for periodicals exceeding $10, counting 
each at its full price. 
N. D.C. HODGES, 874 Broadway, N. Y. 
orp | 
(Grae (( Ae (x 
WOOL and SILK and WOOL 
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ENGLISH AND SCOTCH SUITINGS, 
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FANCY WEAVES, ARMURES, 
MIXTURES, CHECKS, STRIPES, 
PLAIDS, PRINTED CHALLIES, 
SILK AND WOOL CREPONS, 
WOOL CREPONS, 
WHITE, CREAM, AND COLORED 
CREPONS, 
LIGHT FABRICS AND TISSUES 
for Evening and House Wear. 
EMBROIDERED ROBES. 
Deoadovay HK 19th St. 
NEW YORK. 
BUILDING 1893 Catalogue 
B O O K S = PIE AER aR DoE ABLE 
also Catalogue of Draw- 
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teriaizs, sent fres on appli- 
cation to 
DRAWING = | st 
INSTRUMENTS. § 23 waren Stotow Vorke 
STERBROOK’S 
STEEL PENS. 
OF SUPERIOR AND STANDARD QUALITY. 
Leading Nos.: 048, 14, 130, 135, 239, 333 
For Sale by all Stationers. 
THE ESTERBROOK STEEL PEN CO. 
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A Ruddy Glow 
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When this glow of health is 
absent assimilation is wrong, 
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scott's Emulsion 
taken immediately arrests 
waste, regardless of the 
cause. Consumption must 
yield to treatment that stops 
waste and builds flesh anew. 
Almost as palatable as milk. 
Prepared by Scott & Bowne, N. Y. All druggists. 
oF ETH 
HANDY BOOKS. 
PRACTICAL ELECTRICS, a universal handy book 
on every day Electrical matters, fourth edition. 135 
pages, I2vo, cloth, price 75 cents. 
ELECTRICAL TABLES AND MEMORANDA for 
Engineers, by Silvanus P. Thompson, 128 pages, Ilus- 
trated, 64mo, roan, 50 cents. 
A SYSTEM OF EASY LETTERING, by Howard 
Cromwell, 32 different styles, 50 cents. 
THE ORNAMENTAL Penman’s pocketbook of alpha- 
bets, 37 different styles, 20 cents. 
Books mailed post paid to any address on receipt of 
publish price. 
SPON & CHAMBERLAIN, 
Mention this paper. xz Cortlandt Street, N.Y. 
FOSSIL RESINS. 
This book is the result of an attempt to 
collect the scattered notices of fossil resins, 
exclusive of those on amber. The work is of 
interest also on account of descriptions given 
of the insects found embedded in these long- 
preserved exudations from early vegetation. 
By CLARENCE LOWN and HENRY BOOTH: 
129° $l: 
N. D. C. HODGES, 874 Broadway, N. Y. 
a 5° Epo) Cae} 
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me 
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living rooms. 
naming this paper. 
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A few minutes’ daily exercise 
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~ machine separate, $4.50 and up. 
~~ Educated agents wanted. Puyst 
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adjust- 
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Sent for haif price to those 
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