SCIENTIFIC LITERATURE. 



421 



the reproduction of foliage for groups. The 

 appendix contains addresses of reliable firms 

 from whom tools and materials used in taxi- 

 dermy may be purchased. 



The preparation of this book on The 

 Storage Battery was suggested to Mr. Tread- 

 well* by his finding a lack in working on 

 these machines of any compact data concern- 

 ing their construction, and the paucity of reli- 

 able discharge curves ; and he concluded that 

 a book containing such data and curves, with 

 rules for the handling and maintenance of 

 cells, would be valuable to all interested in 

 storage batteries as well as to the student 

 and manufacturer. Among the points spe- 

 cially mentioned by the author are the lists of 

 American and foreign patents given as foot- 

 notes for the various types, not complete but 

 noticing the principal patents for each cell ; 

 the chapter on the chemistry of secondary 

 batteries, which gives the latest and most 

 generally accepted theory concerning the 

 chemical reactions taking place in an accu- 

 mulator, and which has been approved by 

 Dr. Sewal Matheson ; and, in the appendix, 

 tables of data comprising figures of all the 

 batteries, methods for the measurement of 

 the E. M. F. and internal resistance of a 

 storage battery ; and data from which the 

 theoretical and practical capacity of an accu- 

 mulator may be determined. 



The Natural Advanced Geography \ is a 

 successful application of modern methods to 

 the teaching of this science, and presents it 

 with the interest undiminished which really 

 appertains to it. While in the elementary 

 book of this, the " natural " series, the pupil 

 starts from his own home and is introduced 

 to the study of man in relation to his en- 

 vironment, in the present work the fact is 

 developed that environment itself is the chief 

 factor in the various activities and economies 

 of man. One of the salient features of the 

 presentation of the subject, marked through- 

 out the work, and one that commands high 

 praise, is the arrangement of the facts into 



* The Storage Battery. A Practical Treatise 

 on the Construction, Theory, and Use of Second 

 ary Batteries. By Augustus Treadwell. New 

 York : The Macmillan Company. Pp. 257. Price, 

 $1.75. 



t Natural Advanced Geography. By Jacques 

 W. Kedway and Russell Hinman. American 

 Book Company. Pp. 100. 



such order that their correlation may be per- 

 ceived and the unity of Nature recognized. 

 The isolated, barren, curt, unrelated state- 

 ments that made the study of many of the 

 old geographies hard and tedious are con- 

 spicuously absent, and the subject, studied 

 in orderly sequence, " unfolds itself naturally 

 and logically, each lesson preparing the way 

 for those which follow." The first part of 

 the work is devoted to a study of the world 

 as a whole. The second part, comprising 

 about three fourths of the volume, is an ap- 

 plication of these laws to the various coun- 

 tries of the globe, beginning with the United 

 States. In the United States, for instance, 

 a general description of the whole is given, 

 which presents a real, comprehensive mental 

 picture of the country; and the process is 

 repeated, in measure according to the con- 

 ditions, for the several States, so that the 

 pupil is taught what are the factors that give 

 the characteristics and local features to each. 

 A like method is pursued, on a more gen- 

 eral scale, with other countries. The colored 

 maps are drawn on a system of uniform 

 scales, with reliefs plainly shown according 

 to the accepted conventions ; graphic charts 

 or sketch maps showing the distribution of 

 products and resources are employed ; and 

 pedagogical exercises and aids are afforded 

 abundantly. 



A text- book on the Differential and In- 

 tegral Calculus* for students who have a 

 working knowledge of elementary geometry, 

 algebra, trigonometry, and analytical geom- 

 etry, by Prof. P. A. Lambert, has the three- 

 fold object of inspiring confidence, by a logi- 

 cal presentation of principles, in the methods 

 of infinitesimal analysis ; of aiding, through 

 numerous problems, in acquiring facility in 

 the use of these methods ; and, by applica- 

 tions to problems in physics, engineering, and 

 other branches of mathematics, to show the 

 practical value of the calculus. By a division 

 of the matter according to classes of func- 

 tions, it is made possible to introduce these 

 applications from the start, and thereby to 

 arouse the interest of the student. By si- 

 multaneous treatment of differentiation and 

 integration and the use of trigonometric 



* Differential and Integral Calculus. For 

 Technical Schools and Colleges. By R. A. Lam- 

 bert. New York : The Macmillan Company. Pp. 

 245. Price, $1.50. 



