NEW BIOLOGICAL BOOKS 



131 



theory as unnecessary and unsupported by 

 any established biological facts, the resi- 

 due is an interesting speculation with much 

 to commend it to the attention of biolo- 

 gists. The central idea is that: "In- 

 stinctive reactivity, instinctive responses, 

 instinctive urges, these are the moving 

 impulses in living beings, whether we 

 study them as unicellulars, as plants or 

 animals, as lone hunters or in armies, as 

 swarms, flocks, herds, hives, peoples or 

 nations." Space is lacking here to show 

 how this idea is developed. It must suf- 

 fice to say that while perhaps no qualified 

 biologist will agree with Mr. Cook at all 

 points it will do none of them any harm 

 to read what he has to say. 



POULTRY PRODUCTION. 

 By William A. Lippincott. Lea and Febiger 

 $3 . 50 54X7!; viii + 6oz Philadelphia 

 The fourth edition, thoroughly revised, 

 of a standard poultry text. It is one of 

 the most scholarly books in the field, 

 extensively illustrated, and well docu- 

 mented with a bibliography covering 2.0 

 pages of closely set 8-point type. The 

 general biologist will find it a useful 

 resume of the considerable contributions 

 which have been made by poultry workers 

 during the last 2.5 years to the knowledge 

 of avian physiology and genetics. 



REGENERATION UND TRANSPLAN- 

 TATION. 1. Band: Regeneration. 

 By E. Korschelt. Gebruder Borntraeger 



M.60 6| x 10; xii + 818 (paper) Berlin 

 This is a colossal survey of the field of 

 regeneration, thorough and systematic, as 

 would be expected from its distinguished 

 author. It is to be followed by a volume 

 on transplantation and explanation, which 

 is now in preparation. The painstaking 



thoroughness of the work is indicated by 

 the fact that this first volume contains a 

 bibliography covering 65 closely printed 

 pages. The whole treatise will constitute 

 a reference work which no biological 

 laboratory can afford to be without. 



FOUNDATIONS OF BIOLOGY. 

 By Lorande Loss Woodruff. 



The Macmillan Co. 

 $1.50 5 x 7!; xxiii + 546 New York 

 MANUAL OF BIOLOGICAL FORMS. 

 By George A. Baitsell. The Macmillan Co. 

 $3 . 50 5 x 7! ; xiv + 411 New York 



The first of these volumes is the third 

 edition, revised, of a widely used text- 

 book of elementary general biology. The 

 chief addition to this new edition is a 

 chapter on biology in relation to human 

 welfare. 



Dr. Baitsell has also revised his text, 

 which is intended to serve as a comple- 

 mentary work to Professor Woodruff's. 

 It gives detailed descriptions and directions 

 for study of the forms used in laboratory 

 work in general biology. 



The two books together furnish the basis 

 of an excellent course. 



GENERAL BIOLOGY. A Book of Out- 

 lines and Practical Studies for the General 

 Student. 

 By James G. Needham. 



American Viewpoint Society, Inc. 

 $2.-50 55 x -j\\ xiv + 546 New York 

 The thirteenth edition of a standard and 

 valuable text book. Professor Needham 

 writes with a clarity, charm, and insight, 

 rarely achieved by scientific men. These 

 qualities are exhibited in high degree in, 

 this book as well as in his well-known 

 text book of limnology The Life of 

 Inland Waters. 



