>^ 



THE QUARTERLY REVIEW OF BIOLOGY 



evolution can get from these papers, 

 particularly the second, some first-hand 

 data to put before his classes as to what 

 the "struggle for existence" really means. 



Commission contains a good deal of 

 material of interest to the general biolo- 

 gist especially the student of growth 

 problems and of ecology. 



ANNOTATED LIST OF FISHES COL- 

 LECTED IN THE VICINITY OF GREEN- 

 WOOD, MISS., WITH DESCRIPTIONS 

 OF THREE NEW SPECIES. From Bui- 

 letin of the Bureau of Fisheries, Vol. XLIII, 

 1927, Part II. Document No. 1027. 

 By Samuel F. Hildebrand and Irving L. 

 Towers. U. S. Government Printing Office 

 15 cents Washington 



-j\ x iof; 32. (paper) 

 Chiefly of taxonomic and ecological 

 interest. 



BEAVER HABITS AND EXPERIMENTS 

 IN BEAVER CULTURE. U. S. Depart- 

 ment of Agriculture Technical Bulletin No. 



21. 



By Vernon Bailey. 



U. S. Government Printing Office 



2.0 cents Washington 



5 s x 9I; 49 (paper) 



A brief account of the habits of the 



beaver with some interesting information 



as to raising them in captivity. 



PROGRESS IN 

 QUIRIES 1916. 

 the Divisional Co: 

 1 927. Bureau of 

 1029. 



By Elmer Higgins. 

 U. S. 

 2.5 cents 



st*si 



This report of 

 what used to be 



BIOLOGICAL IN- 

 Including Proceedings of 

 nference January 4 to 7, 

 Fisheries Document No. 



Government Printing Office 

 Washington 

 166 (paper) 



the scientific work of 

 called the U. S. Fish 



LEHRBUCH DER PROTOZOENKUNDE. 



Eine Darstellung der Naturgeschichte der 

 Protozpen mit Besonderer Berucksichtigung 

 der Parasitischen und Pathogenen Formen. 

 Funfte Auflage. I. Teil. Allgemeine Natur- 

 geschichte der Protozpen. 

 By Franz, Doflein. Rewritten and revised by 

 Eduard Reichenow. Gustav Fischer 



2.1 marks Jena 



7 x 1 of; iv + 436 (paper) 

 This new edition of the general bio- 

 logical part of Doflein's well known text is 

 a fine piece of work, which should be in 

 every zoological laboratory. It is beau- 

 tifiully printed, both as to text and illus- 

 trations. 



BOTANY 



MYCORRHIZA. An Account of Non- 

 Pathogenic Infection by Fungi in Vascular 

 Plants and Bryophytes. 



By M.C. Rayner. Wheldon and Wesley, Ltd. 

 $i.Z5 6| x 9! ; x + 146 London 



The author discusses the various lines of 

 research which have been carried on in 

 this interesting field. In the opinion of 

 the writer "there can be no doubt that 

 recent investigations by means of pure 

 cultures have tended to support the view 

 that the possession of mycorrhiza is 

 frequently of benefit to the vascular hosts, 

 the nature and extent of such benefit 

 depending upon the physical conditions 

 of the environment and the physiology of 

 the association in individual cases." 

 The book is well illustrated and has an 

 extensive bibliography. It is essentially 





