July, 1899.]
P:~b/ica/io~zs Received.
77
A chapter is devoted to advice to w h e e l m e n on the choice and care of the m a c h i n e and accessories, and hygienic considerations. The concluding chapis devoted to th ~_theory of the bicycle. W.
The Elemenls of Physics.
A college text.book. By Edward L. Nichols and Win; S. Franklin. In thrce volumes. Vol. II, Electricity and Magnetism. New York : The Macmillan Compauy. 1896. Price, $L5 o.
This work is well k n o w n to teachers of physics as a thoroughly trustwor&y, u p - t o d a t e treatise on the subject, well arranged and adapted for its intended service. W.
t~tolographic 3[osaics.
An annual record of photographic progress. I899. (Thirty-fifth year of publication.) New York : Edward L. Wilson ; London : Dawborn & Ward.
The successive almual volumes of " Photographic Mosaics" lose n lthing of t h e i r interest and value to the professional and amateur photographer. The present volume, the thirty fifth of the series, devotes 1o6 pages to a review of photographic progress during the previous year, which will be found conven i e n t for reference by all who aspire to keep in touch with the current advances in the art, and the renlaining 186 pages are devoted to contributions on a great variety of live subjects of interest to photographers, from welIknown experts. This volume is as profuliely and handsomely illnstrated as usual. W.
PUBLICATIONS
RECEIVED.
Acety/en: Cas fi~r ~ p u / a r L@hlip4~'. Pan-Anlerican Acetylene Conlpany, Buffalo, N. Y.
Maa'it~tum SD'esses in Framed Bridges. By Win. Cain. New York : D. Van Nostrand Co. I897. New and revised, constituting No. 38of tile Van Nostrand Science Series. Price, 50 cents. M Laboratory Course in Experimental Physics. By W. J. Loudon, B.A., and J. C. McLennan, B.A. New York and London : Macmillan & Co. Price, 1~I.9o. From John Wanamaker, Philadelphia. A Higher Induslrial and Commercial tfduealion as an Essential Co#dilion of Our Future ~ralerial Prosperity. An address before the Society for the Promotion of E n g i n e e r i n g Education. By J. 13. Johnson, President of the ,Society. Delivered in Boston, Mass., August i8th, 1898. (Reprinted from the Soeiety's Proceedings. I
Soft Coal BurJzitl g. By C. 5I. Higginson. (Fifth edition.) Chicago. 1898. A brief disquisition on the essential features of constructiou and operation of steam boilers to insure smokeless combustion with soft coals.