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OF THE-

FRANKLIN INSTITUTE.

DEVOTED TO

SCIENCE AND THE MECHANIC ARTS.

EDITED BY

Prof. Edwin J. Houston, A.M., Ph.D., Chairman; Prof. Arthur Beardsley,
C.E., Ph.D., Mr. Theo. D. Rand, Prof. Coleman Sellers, E.D.,
Mr. J. C. Trautwine, Jr., Committee on Publications,
with the Assistance of Dr. Wm. H. Wahl,

Secretary of the Institute.

VOL. CXL.-Nos. 835-840.

JULY-DECEMBER, 1895.

PHILADELPHIA:

Published by the Institute, at the Hall, 15 South Seventh Street.

1895.

1895, Jul 5 - 1896, Selv.2 1.
Farrar fund

12/28/72. hold in stocks for sei Conter tromper

Vol. CXL.-July-December, 1895.

INDEX.

Air-lift pump, theory of the. (Harris). .

Aldrich, Wm. S. Education and the State university

(Hering)

Anaglyph, the. A new method of producing the stereoscopic effect.

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American tools in England

Ammeter and voltmeter, recording.

(Watch) ..

Argon, physical properties of.

314

reasons for predicting the existence of. (Reed)

68

Artificial silk....

78

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198

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Bacteriology, recent advances in, etc. (See Ball.)

Ball, M. V. Recent advances in bacteriology, with special reference to
food

Ball nozzle, the. (Kitson)

Beet sugar industries

Bergami, F. The citrate method of phosphoric acid determination, with

special reference to insoluble phosphates

Berliner, Emile. Technical notes on the gramophone.

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Bitumen. (See Peckham.)

Bitumens. (See Asphalts.)

Brass, determining the quality of, by color

391

Buoys, electrically-lighted, in Gedney Chaunel, New York Harbor

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