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PENROSE's PICTORIAL ANNUAL THE PROCESS YEAR BOOK FOR 1899. Edited by William Gamble. Lou- don : Penrose & Company. 1899, 8vo. I Pp. 108. j Process reproductions faa e almost entirely displaced all other methods of reproducing pictures, and while j much has been lost, much has also beeo gained At present there does not seeio to be any limitation to pro-1 cess work, and the results &s outlined in this nnua ire j wonderful Some of the half-tones are Tery remarka- ble, and the color work is scarcely less so. I I AMERICAN ANNUAL OF PHOTOGRAPHY AND PHOTOGRAPHIC TIMES ALMANAC FOR 1900, New York The Scovillet & Adams Company. 1890, 8vo. Pp. 370. Illustrated. Paper 75 eeDts* The present volume is ably edited by Mr. Walter E. Woodbnry aud Is the fourteenth of the series. It. is filled with valuable articles and it is profusely illustrated. It striken us as being the best annual we hare sees and no photographer can afford to be without it, BIETAI, AND PLATE WORE. Its Patterns and Their Geometry; also Notes on Metals and Rales of Mensuration for I the Use of Tie, Iron and Zinc Plate! Workers, Coppersmiths, etc. By Charles Millis, M.I.M.E. London and New York: Spon & Chamberlain. 1899. 12ino. Pp. 458, Price 3.50. This is an excellent book upon an eminently practical subject. Probably no trade requires mich, a comprehensive knowledge of geometry as metal plate work, and this book is calculated to give exactly the informatioo which is needed by practical men. The methodical part of it ig not neglected, but it is merged in the practical It is an admirable book and is a complete treatise upon the Subject STAR NAMES AND THEIR MEANINGS By Richard Hirsekley Allen, New York : G. E. Stechert. 1899, 8vo. Pp. 583. Price 5. This list of star names is published in the endeavor to fill an acknowledged vacancy in our astronomical literature. It is not intended for the professional astronomer, who, as & rule, cares little about the old designations of the objecte of his study, jet great scholars have thought ibis nomenclature not unworthy of their attention. The author has accomplished a most difficult task with rare discrimination and success. The work Is most scholarly and reflects the highest possible credit upon the learning of Its author. Very few men could hare written this book, which is most beautifully printed by the DeYinne Press. It will certainly tend to foster & more intelligent interest is the nomenclature of practical astronomy, and the author should be well pleased with the result of hip arduous labors. MATHEMATICS. New Y ark: Doubletlay & McOlure Company. 1899. I2ino. Pp. 340. Price 1 net. This book is essentially practical, and Is intended for youBg men and others who wish to obtain stich a knowledge of mathematics as should be of service to them in thrtr business is mechanics or engineers, and to obtain It bj study at home, -The bulk of the material was issued j In The Chicago Record, and proved to be of the utmost j interest and value. After a careful examination of the book, we are Inclined to believe that the problems pro , posed are much more practical than in the stereotyped textbooks of mathematics.
