116 Scientific Intelligence. 



5. Teachers' Manual of Biology ; by Maurice A. Bigelow. 

 Pp. ix, 113. New York, 1912 (The Macmillan Company). — 

 This is a helpful little book of suggestions to teachers of biology. 

 The methods of obtaining and preparing materials for a course 

 of laboratory exercises are described, together with many valu- 

 able hints on the presentation of the different phases of the sub- 

 ject in the classroom. The book is particularly designed to 

 accompany Bigelow's recent text-book, " Applied Biology," the 

 chapters and paragraphs being numbered correspondingly. Lists 

 of books, apparatus, and dealers in supplies are given in appen- 

 dices, w. r. c. 



6. Michigan Bird Life ; by Walter Bradford Barrows. 

 Pp. xi, 822. (Special Bulletin of the Department of Zoology 

 and Physiology of the Michigan Agricultural College.) Pub- 

 lished by the Michigan Agricultural College, 1912. — This book 

 contains a systematic account of the 326 species of birds found 

 in the State of Michigan. In addition to the technical descrip- 

 tion of each species, a large amount of attention is devoted to 

 the habits, food and economic importance. The work is illus- 

 trated with 70 plates and 152 text figures of anatomical details. 

 The natural history of each species is written in an entertaining 

 style, and the book is thus in wide contrast to the ordinary cata- 

 logues of birds which so many state surveys have published. 



w. r. c. 



IV. Miscellaneous Scientific Intelligence. 



1. The Physiology of Protein Metabolism ; by E. P. Cath- 

 cart. Pp. 1-142. New York, 1912 (Longmans, Green & Co.). — 

 This publication is of the series of Monographs edited by Plim- 

 mer and Hopkins and the attempt has been made in the present 

 volume to avoid laying undue stress upon the fate of particular 

 constituents of the protein molecule. Instead it consists of a dis- 

 cussion of the more important results in the problems of protein 

 metabolism that have been published within the last decade. 

 Some of the topics discussed are digestion and absorption of 

 proteins, protein regeneration, deamination, influence of food 

 on the composition of the tissues, protein requirements, theories 

 of protein metabolism, starvation, work. f. p. u. 



2. Researches on Cellulose, III, 1905-1910 ; by Cross and 

 Bevan. Pp. x, 173. New York, 1912 (Longmans, Green & 

 Co.). — This is the third in the series of volumes supplementary to 

 the authors' " Cellulose." In this last volume no attempt is made 

 to present a complete review of the extensive literature dealing 

 with the various celluloses and their technical uses ; the authors 

 have confined themselves to a critical review of a relatively few 

 pieces of work in the field of cellulose chemistry which they 

 believe contribute most directly to the solution of fundamental 

 problems. There is an introduction, distinctly metaphysical in 



