Geology and Natural History. 151 



Co.). — This widely used laboratory manual contains well arranged 

 directions for the study and dissection of representatives of each 

 of the principal groups of invertebrate animals. The new edi- 

 tion contains a number of additional dissections and a revised 

 scheme of classification. Complete directions are thus made 

 available for the laboratory study of forty different species. A 

 wide range in the selection of forms for study in zoological 

 courses is thereby made possible. w. R. c. 



9. The Meaning of Evolution ; by Samuel Christian 

 Schmucker. Pp. 305. New York, 1915 (The Macmillan Com- 

 pany). — The writer sketches in a popular style the development 

 of the doctrine of evolution from the earliest times to the present. 

 He briefly reviews the life and influence of Darwin and Wallace, 

 and then states and examines the evidence in support of their 

 theory. He includes many interesting personal observations. 

 The evolutionary theories since Darwin, the future evolution of 

 man, and the relation of biological science to religious beliefs are 

 also discussed. The book will appeal to the general reader rather 

 than to the trained biologist. w. R. c. 



10. Lessons in Elementary Physiology • by Thomas H. 

 Huxley. Sixth edition, enlarged and revised. Pp. xxiv, 604, 

 with 185 figures. New York, 1915 (The Macmillan Company). — 

 For almost exactly a half century this textbook has stood as a 

 model of clear, concise, expository writing. Few scientists of 

 any time have equalled this great master in ability to present the 

 essentials of a science in a manner both comprehensive and ele- 

 mentary. Huxley's original book was thoroughly revised by 

 Foster many years ago, and has now been brought up to date by 

 Joseph Barcroft. The present edition fortunately retains the 

 full force of Huxley's power of expression, with such revisions 

 and additions as are necessary to make the work as useful to the 

 present generation as the older editions have been to the past. 



w. R. c. 



11. Diversions of a Naturalist ; by Sir Rat Lankester. Pp. 

 xvi, 424, with 44 illustrations. New York, 1915 (The Macmillan 

 Company). — The book consists of some forty brief essa}^ of a 

 popular nature, originally printed as newspaper articles. They 

 embrace a great range of topics in many branches of science, 

 although most of them have some bearing on animal life. Writ- 

 ten in an easy, conversational style, with many interesting 

 anecdotes and charming reminiscences, these essays furnish enter- 

 taining reading for anyone at all interested in biology or general 

 science. Aside from the pleasure of its reading, however, the 

 book has a real educational value, for each topic is based on scien- 

 tific truths of general interest. w. r. c. 



12. Beekeeping ; by E F. Phillips. Pp. xxii, 457, with 190 

 figures. The Rural Science Series. New York, 1915 (The 

 Macmillan Co.). — The author's long experience in charge of the 

 office of bee culture investigations of the United States Bureau 

 of Entomology has enabled him to anticipate the needs of the 



