104 EVOLUTION AND GENETICS 



REFERENCES 



NuTTALL, G. H. F., Blood Immunity and Blood Relationship, 1904. 



LoEB, J., Studies in General Physiology, 1905. 



Howell, W. H., Textbook of Physiology, 9th edition, 1920. 



Dercum, F. X., Biology of Internal Secretions, 1923. 



Jordan, E. O., General Bacteriology, 8th edition, 1924. 



Robertson, T. B., The Chemical Basis of Growth and Senescence, 1926. 



Woodruff, L. L., Foundations of Biology, 3rd edition, 1927. 



