OF THE

FRANKLIN INSTITUTE,

DEVOTED TO

SCIENCE AND THE MECHANIC ARTS.

EDITED BY

Dr. W. H. Jayne, Chairman; Mr. Edwin Swift Balch, Ph.D., Dr. Persifor
Frazer, Mr. Louis E. Levi, Prof. Coleman Sellers, E.D., Committee on
Publications;

with the Assistance of

Dr. Wm. H. Walil, Secretary of the Institute.

VOL. CLXII.-Nos. 967-972.

(81st YEAR.)

JULY-DECEMBER, 1906.

PHILADELPHIA :

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

1906.

Vol. CLXII.-July-December, 1906.

Analytical notes-Some recently devised tests. (Leffmann).

.371

Balch, Edwin Swift. The survival of the shortest and easiest in lan-
guage

.421

Bartlett, John. On the application of Farmer's method of reduction by
which the shadows are preserved and only the high-lights re-
duced

.73
.473

Supplementary illumination in photographic development.
Baldwin, Mathias W. Presentation of portrait of.

Bates, Lindon W. The terminal lake canal...

BOOK NOTICES....

Calcium, use of in metal refining..

Carbonic acid as a cause of rust.

Carter, Oscar C. S. Acoma: the Cliff City of New Mexico...

Combustion, regulation of the duration of. (Eldred)....

Chesapeake and Delaware canal, resolution of Institute, for enlarge-

ment of. (Haupt)...

Chilean nitrate deposits.

.80

I

.476

.424

157

.449

.201

Chimneys. (See high chimneys)

Civil service reform.

(See Massachusetts)..

Chief Eng. B. F. Isherwood, U. S. N.)....

Claude, Georges-Low pressure: the death of matter. (Translated by

Cold-worked iron, effects of strain in.

Comparative strength of green Tamarack and green Norway pine.

Corundum, the need of.....

Cotton, the scouring of. (Matthews).

Cryalite, importation of.....

Darrach, Chas, Gobrecht. The design, installation and maintenance of

the modern office building...

Diamonds, the search for..

world's famous..

Easter Island, a trip to. (Frank).

Earthquake records....

(San Francisco), one lesson of..

.326

.159

.72

.375

.396

.472

.448

.25

.296

.37, 129

.212

.217

.179

.335

.158