Vili CONTENTS. 
Scientific Intelligence-—Correspondence of M. Jerome Nicklés—Electric 
illumination, 440.—New Battery with a constant current, 441—A Battery, called a 
ith triple contact: Nautical Telegraph: Light-houses and Illumination, 
and Reflectors, 442.—Manufacture of Soda, 443.—Astrono New: 
atory: Color of the Moon during eclipses: Works of Arago, 444. —Influence of 
Tempera phenomena of Capillarity: Harmonic rtions of the h 
body, 445.—Bibliography, 446.—First of 1857, 447.—Obituary—Prof. Jacob 
Bailey, 447.—Prof. M. Tuomey, 448.—New Granada; Twenty Months in the Andes, 
by Isaac F. Hotton, 448.—Memoir of John Dalton, and History of the Atomic Theory 
up to his time, by Rosert Ancus Smirs, Ph.D., F.C.S., 449—Recent Papers by 
Prof. J. Leidy, M.D. : Notices of new publications, 450. 
Index, 453. 
ERRATA. 
P. 89, line 2 from bottom, for “ northeast,” read “‘east.”—P. 178, lines 3 and 5 from 
bottom, for“ Tannenschein,” read “ Sonnenschein.” — : 
Se ge ots OC ae ae 
