THE JOURNAL

OF THE

FRANKLIN INSTITUTE,

DEVOTED TO

SCIENCE AND THE MECHANIC ARTS.

EDITED BY

Mr. Theo. D. Rand, Chairman; Prof. Arthur Beardsley, C.E., Ph.D.,
Mr. James Christie, Dr. H. W. Jayne, Prof. Coleman Sellers, E.D.,
Committee on Publications;

with the Assistance of

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

VOL. CXLVI.—Nos. 871-876.

(73D YEAR.)

JULY-DECEMBER, 1898.

PHILADELPHIA:

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

1898.

JOURNAL OF THE FRANKLIN INSTITUTE.

Vol. CXLVI.-July-December, 1898.

Batcheller, B. C. Recent progress in the development of pneumatic
tubes.

Bearing-metals, the micro-structure of. (Clamer)

81

138

Bilgram's diagram and the solution of problems involving lead. (Smith) 372
Bitumens (California), technology of. (Peckham).
Blast-furnace gas, power from

BOOK NOTICES:

Sauveur. "The Metallographist

Bancroft. The phase rule .

45

392

76

235

O'Connor. Gas engineer's pocket-book

Encyclopédie des Aide-Memoire

Thomson. Mathematical theory of electricity and magnetism

Barré-Vigreux. Formulæ for the engineer

Discharge of electricity through gases

Nernst-Borchers. Yearbook of electro-chemistry

Gibbs. Lighting by acetylene .

Merrill. Alkaloidal estimation

Department Agriculture. Beet sugar

Ware. Sugar beet seed

Engineers' Society of Western Pennsylvania. Methods for analysis

of ores, etc.

Wilcox. Cantilever bridges

Briggs. Statistics

Burr, Wm. H. On cast-iron colums in building construction..

236

394

394

395

395

395

396

396

396

396

397

397

397

397

398

398

316