BIBLIOGRAPHY 511 



KELLOGG, VERNON L. Darwinism To-Day. Henry Holt & Co., 1907. 

 LE CONTE, JOSEPH. Evolution. D. Appleton & Co., 2d ed., 1897. 

 LOCY, WILLIAM A. The Main Currents oj Zoology. Henry Holt & Co., 1918. 

 LULL, RICHARD SWANN. Organic Evolution. The Macmillan Co., 1917. 

 MCFARLAND, JOSEPH. Biology, General and Medical. W. B. Saunders Co., 



3d ed., 1918. 

 METCALF, MAYNARD M. An Outline of the Theory of Organic Evolution. 



The Macmillan Co., 1911. 

 MORGAN, THOMAS H. Evolution and Adaptation. The Macmillan Co., 



1903. 

 . A Critique of the Theory of Evolution. Princeton University Press, 



1916. 

 NEWMAN, HORATIO H. "The Limits of Hereditary Control in Armadillo 



Quadruplets: A Study of Blastogenic Variation." Jour. Morph., 



XXII (1911). 



. The Biology of Twins. The University of Chicago Press, 1915. 



. Vertebrate Zoology. The Macmillan Co., 1920. 



NUTTALL, G. H. F. Blood Immunity and Blood Relationship. Cambridge, 



at the University Press, 1904. 



NUTTING, C. C. "The Relation of Mendelism and the Mutation to Theory- 

 Natural Selection." Science, N.S., LIII (Feb. n, 1921). 

 OSBORN, HENRY F AIRFIELD. From the Greeks to Darwin. The Macmillan 



Co., 1908. 



. The Origin and Evolution of Life. Charles Scribner's Sons, 1918. 



PLATE, LUDWIG. Uber die Bedeutung des Darwirfschen Selcctionsprincips 



und Proleme der Arlbildung. Engelmann, 2d ed., 1903. 

 POPENOE, PAUL, and JOHNSON, ROSWELL H. Applied Eugenics. The 



Macmillan Co., 1918. 

 ROMANES, GEORGE J. Darwin and after Darwin. The Open Court 



Publishing Co., 1892. 

 SALEEBY, CALEB WILLIAMS. The Promise of Race Culture. Moffat, Yard 



& Co., 1909. 

 SCHUCHERT, CHARLES. Text-Book of Geology: Part II, Historical Geology. 



John Wiley, 1915. 

 SCOTT, WILLIAM BERRYMAN. The Theory of Evolution. The Macmillan 



Co., 1911. 

 SHELFORD, VICTOR E. Animal Communities in Temperate America. The 



University of Chicago Press, 1913. 

 SHULL, A. FRANKLIN. Principles of Animal Biology. The McGraw-Hill 



Book Co., 1920. 



STEINMANN, GUSTAV. Die Abstammungslehre. Engelmann, Leipzig, 1908. 

 TAYLER, J. L. "The Scope of Natural Selection." Natural Science, 



Vol. XV., 1899. 



