576 



THE QUARTERLY REVIEW OF BIOLOGY 



An interesting lecture on the problem of 

 bacterial symbiosis in the alimentary tract 

 of organisms using wood as food. Rela- 

 tively little space is given to the termites, 

 and a great deal to the wood-boring 

 beetles. 



GEHEILTE KNOCHENBRUCHE bet 



wildlebenden and in Gefangenschaft gebaltenen 



Tier en. 



By E. Korschelt and Hermann Stock. 



Gebruder Borntraeger 

 14 marks (paper) Berlin 



16.50 marks (bound) 



€\ x 10; iv + 176 

 A detailed study of the healing of 

 broken bones in wild animals. Its interest 

 is, on the whole, rather highly special. 

 The illustrations are numerous and excel- 

 lent. 



HUMAN BIOLOGY 



PROCEEDINGS OF THE WORLD POPU- 

 LATION CONFERENCE. Held at the 

 Salle Centrale, Geneva, August 29th to 

 September 3rd, ip'27.. 

 Edited by Mrs. Margaret Sanger. 



American Birth Control League, Inc. 

 $5.00 5 fx8f; 3 83 New York 



The World Population Conference con- 

 vened in Geneva from August 2.9 to Sept. 

 3, 19x7. Its purpose was to bring together 

 representative scientists from various parts 

 of the world for a discussion of the prob- 

 lems of population, and to make provision 

 for its further study and consideration. 

 There has since been formed a permanent 

 organization, the International Union for 

 the Scientific Investigation of Population 

 Problems. 



The present volume gives the English 



text of all the papers prepared for the 

 Geneva meeting, as well as the supple- 

 mentary remarks and discussion which 

 followed their presentation. The gather- 

 ing included most of the world's eminent 

 scientists actively interested in popula- 

 tion. Of special interest to readers of this 

 journal is the important role taken by 

 biologists in what would have been 

 considered until recently the exclusive 

 concern of sociologists and economists. 



Leading papers were delivered by Prof. 

 Raymond Pearl, of the Johns Hopkins 

 University; Prof. A. Niceforo, of the 

 University of Naples; Prof. H. P. Fair- 

 child, of New York University; Prof. E. 

 M. East, of Harvard University; Prof. 

 Jean Bourdon, of the Sorbonne; Dr. Rajani 

 Kanta Das, of the International Labor 

 Office; Prof. Corrado Gini, of the Statis- 

 tical Institute at Rome; Prof. T. N. Carver, 

 of Harvard University; Prof. A. M. Carr- 

 Saunders, of the University of Liverpool; 

 Prof. Lucien March, of the University of 

 Paris; Prof. A. Grotjahn, of the Univer- 

 sity of Berlin; Prof. H. W. Methorst, of 

 the International Statistical Institute, 

 The Hague; Dr. Kark Arvid Edin, of the 

 University of Stockholm; Dr. Julius Tand- 

 ler, of the Public Health Department of 

 Vienna; Dr. F. A. E. Crew, of Edinburgh 

 University; Dr. Boleslav Rosinski, of 

 Poland; M. Albert Thomas, of the Inter- 

 national Labor Office; Dr. J. W. Gregory, 

 of the University of Glasgow; Dr. A. 

 Koulisher, of the University of Paris; 

 Prof. Livio Livi, of the University of 

 Rome; Prof. Charles H. Wickens, of the 

 Commonwealth Bureau of Census and 

 Statistics, at Melbourne; Mr. E. J. Lid- 

 better; Prof. H. Lundborg, of the State 

 Institute for Race Biology at Uppsala; Dr. 

 Warren S. Thompson of the Scripps Foun- 

 dation, U. S. A. 



We may presume that the authors sum- 

 marized their current views on the more 





