Evolution 415 



References. 



Charles Darwin, "The Origin of Species by Natural Selection." 



Delage and Goldsmith, "The Theories of Evolution." 



Vernon L. Kellogg, "Darwinism To-day." 



Lull, Barrell, Schuchert, Woodruff, and Huntington, "The Evolu- 

 tion of the Earth and Its Inhabitants." 



Henry M. Bernard, "Some Neglected Factors in Evolution." 



Lawrence J. Henderson, "The Order of Nature." 



S. Herbert, "The First Principles of Evolution." 



Thomas Hunt Morgan, "A Critique of the Theory of Evolution." 



Erich Wasmann, "Modern Biology and the Theory of Evolution." 



Erich Wasmann, "The Problem of Evolution." 



N. C. Macnamara, "The Evolution and Function of Living Pur- 

 posive Matter." 



A. D. Darbishire, "An Introduction to a Biology." 



George McCready Price, "The Fundamentals of Geology." 



George McCready Price, "The Q. E. D." 



James Johnstone, "The Philosophy of Biology." 



S. J. Holmes, "Life and Evolution." 



Edmund Noble, "Purposive Evolution." 



George H. Parker, "What Evolution Is." 



