Proceedings of the Twenty-seventh Annual Convention of the American Water Works Association, Held at Toronto, Canada, June 17-21, 1907. Published by the Secretary. 1907. pp. 580. Secretary-Treasurer J. M. Diven, of Charleston, S. C., has published in book form the Proceedings of the Toronto convention of 1907. The volume is handsomely printed on good paper and bound in red cloth. It is well indexed; the illustrations are many; the papers need no commendation; and the fifty-one pages of advertisements cannot but be found useful to those interested in or concerned with waterworks supplies and literature. It goes without saying that this volume should find a place in every municipal, public and technical library, as well as in that of every waterworks man and every manufacturer of waterworks appliances and supplies.
The Chemistry of Gas Manufacture: A Practi cal Manual for the Lise of Gas Engineers, Gas Managers and Students. Ry Harold M. Royle, F. R. S., Chief Chemical Assistant at the Beck ton Gas Works. With Colored Plates and II lustrations. New York, The Norman W. Henley Publishing Company. 132 Nassau Street; London, Crosby, Lockwood & Son. ijo8. Pp. XV., 328. Price, $4.50.
The Norman W. Henley Publishing company, of New York, has brought out several manuals for the use of mechanical, gas and electrical engineers, all of which are distinguished for pains taking accuracy and fulness in details, as well as for being up to date in every particular. For gas engineers and those having the .direction of gasworks. who have higher aspirations than being routinists, this manual, on the chemistry of gas manufacture shows that no more practical guide could be desired. It, of course, presupposes a knowledge of elementary truths and processes of chemistry, on which, r.s a foundation, the author bases a concise treatise covering questions and points requiring attention in the ordinary course of the duties of working gas engineers and managers. These will be found to be of practical utility, especially in the case of such gas works as those in which the operations are not so extensive as to necessitate the employment of a separate chemical staff. It is a reliable guide and sufficiently covers the ground. I he several subjects treated are the following: Coal and its characteristics; furnace gases; products of carbonisation; materials for purification; firebrick and fire-clay; photometry and gas testing; carburcttcd water-gas. There are also three appendices, two treating of metropolis gas and miscellaneous extracts, and the third giving some useful tables. There is a very full index, and the illustrations, typography and general get-up of the book leave nothing to be desired. For the libraries of technical colleges and schools no better work than this could be recommended.