il 
SCIEN@E: 
Vol. XXIII. No. 581 
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. 
474,231, granted to 
Thomas A. Edison May 
3, 1892, for a speaking 
QUERY. 
Can any reader of Sczence cite 
a case of lightning stroke in 
which the dissipation of a small 
conductor (one-sixteenth of an 
inch in diameter, say,) has failed 
to protect between two horizon- 
tal planes passing through its 
upper and lower ends respective- 
ly? »Plenty of cases have been 
found which show that when the 
conductor is dissipated the build- 
ing is not injured to the extent 
explained (for many of these see 
volumes of Philosophical Trans- 
actions at the time when light- 
ning was attracting the attention 
of the Royal Society), but not 
an exception is yet known, al 
though this query has been pub- 
lished far and wide among elec- 
tricians. 
First inserted June 19, 1891. No re- 
sponse to date. 
N. D.C. HODGES, 874 BROADWAY, N. Y. 
®he Par Excellence of 
HO Gr GYMNASTICS 
s found in the use of our 
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= tS 
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Anzmia 
is depleted blood. The blood 
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tem lacks the nourishment 
Emulsion 
LES : reason 
the Cream of Cod-liver Oil. 
This nourishing, palatable 
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Don’t be deceived by Substitutes! 
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THE MODERN MALADY ; or, Suf- 
* ferers from ‘ Nerves,’ 
An introduction to public consideration, 
from a non-medical point of view, of a con- 
dition of ill-health which is increasingly 
prevalent in all ranks of society. In the 
first part of this work the author dwells on 
the errors in our mode of treating Neuras- 
thenia, consequent on the wide ignorance of 
the subject which still prevails; in the sec- 
ond part, attention is drawn to the principal 
causes of the malady. The allegory forming 
the Introduction to Part I. gives a brief his- 
tory of nervous exhaustion and the modes of 
treatment which have at various times been 
thought suitable to this most painful and try- 
ing disease. 
By CYRIL BENNETT. ‘ 
12°, 184 pp., $1.50. 
N. D. C. HODGES, 
874 Broadway, New York. 
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A few minutes’ daily exercise 
GYMNASIUI1.” 
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; €an order on approval. Chest 
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veloping every part of the body healthfully, 50 cts. Sent for half price to thos¢ 
naming this paper. 
WHITNEY HOWE GYMNASIUM CO., Box D., Rochester, N. Y. 
telegraph, which patents 
cover fundamental inven- 
tions and embrace all 
forms of microphone 
transmitters and of car- 
bon telephones. 
6 
Shoulders and Upper Back 
good for Round Shoulders 
_ [AWRENCE 
©* ENGRAVING (0 
ny, 8 (entre Street, New Youu, ae 
