Book Notices-Proccerr'inp.
77 general results appeared
in theJozlrnaZ of this Institute in June, rgoo.
By following out these and other lines of work 1 am glad to say that a very marked reduction in the number of hot boxes has been effected in the past few years, in spite of material additions to our car and locomotive equipment.
Hot boxes are not by any means the necessary attendant of train service that they sometimes are considered, and careful study of the conditions and causes in any particular case may often effect remarkable changes.
Book Notices.
Galvanic Batteries : Their theory, construction and use; comprising primary, single-and double-fluid cells. secondary and gas batteries. By S. R. Bottone.
(With 144 illustrations.) 8~0, pp. xvi + 376. London aud Aew York: Whittaker & Co.
rgor. So far as the reviewer is aware, there is no modern work in English treatingof this important branch of applied electricity.
The works of Napier, Niaudet and Prescott, very useful in'their day, are now more or less antiquated, and a modernized work on the 'subject by an author of good repute should prove a welcome addition to current electrical literature.
W.