424 APPENDIX 



POPENOE, P. and JOHNSON, R. H. Applied Eugenics. The Mac- 



millan Co., 1918. 



PUNNETT, R. C. Mendelism. 6th edition. The Macmillan Co., 1919. 

 THOMSON, J. A. Heredity. 2d edition. Henry Holt & Co., 1916. 

 WALTER, H. E. Genetics. 2d edition. The Macmillan Co., 1922. 



CHAPTER XVIII 



ADAMS, C. C. A Guide to the Study of Animal Ecology. The" 



Macmillan Co., 1913. 

 CAMERON, E. H. Psychology and the School. The Century Co., 



1921. 

 CHANDLER, A. C. Animal Parasites and Human Disease. John 



Wiley & Sons, 1918. 



CHESHIRE, F. R. Bees and Bee-Keeping. London, 1886. 

 CRILE, G. W. Man An Adaptive Mechanism. The Macmillan 



Co., 1916. 

 DARWIN, CHARLES. The Fertilization of Orchids. The Various 



Contrivances by which Orchids are Fertilized by Insects. 1862. 

 HALDANE, J. S. Organism and Environment. Yale University 



Press, 1917. 

 HENDERSON, L. J. The Fitness of the Environment. The Macmillan 



Co., 1913. 

 HENDERSON, L. J. The Order of Nature. Harvard University 



Press, 1917. 

 HOLMES, S. J. The Evolution of Animal Intelligence. H. Holt 



& Co., 1911. 

 JENNINGS, H. S. Behavior of the Lower Organisms. Columbia 



University Press, 1906. 

 LLOYD, R. E. What is Adaptation? Longmans, Green and Co., 



1914. 



LOEB, JACQUES. The Organism as a Whole. New York, 1916. 

 LOEB, JACQUES. Forced Movements, Tropisms, and Animal Conduct. 



J. B. Lippincott, 1918. 

 LONGLEY, W. H. "Studies upon the Biological Significance of 



Animal Coloration." I. Journ. of Exper. Zoology, Vol. 23, 1917. 



II. American Naturalist, Vol. 51, 1917. 



