472 APPENDIX 



CHAPTER IV. THE FACTORS AND MECHANISM OF EVOLUTION. 



Darwin: Origin of Species, ch. xv, 1859. Spencer: The Factors of 

 Organic Evolution, pp. 1-37, 1889. Gray: Darwiniana, pp. 9-61, 

 1889. Conn: The Method of Evolution, 1900. Cope: Primary 

 Factors of Organic Evolution, 1896. Jordan: Footnotes to 

 Evolution, ch. iii and iv, 1902. Weismann: The Evolution 

 Theory, vol. I, Lect, 1, 1904. 



CHAPTER V. NATURAL SELECTION AND THE STRUGGLE FOR 



EXISTENCE. 



Malthus: Principles of Population. Darwin: Origin of Species, ch. 

 iii and iv, 1859. Wallace: Darwinism, pp. 14-125, 1891. Mar- 

 shall: Lectures on the Darwinian Theories, pp. 27-52, 1894. Ro- 

 manes: Darwin and After Darwin, vol. I, pp. 125-294, 1895. 

 Wallace: Natural Selection and Tropical Nature, 1895. Bailey: 

 Survival of the Unlike, pp. 13-54. 1897. Osborn : From the Greeks 

 to Darwin, ch. vi, 1899. Headley: Problems of Evolution, pp. 

 68-155, 1901. Conn: Method of Evolution, ch. ii and iii, 1901. 

 Morgan: Evolution and Adaptation, ch. iv and v, 1903. Weis- 

 mann: The Evolution Theory, vol. I, Lects. 2 and 3, 1904. De 

 Vries: Species and Varieties, Their Origin by Mutation, ch. xxviii, 

 1905. Met calf: Organic Evolution, 1905. Kellogg: Darwinism 

 To-day, 1907. 



CHAPTER VI. ARTIFICIAL SELECTION. 



Darwin: Origin of Species, ch. i, 1859. Darwin: Animals and Plants 

 under Domestication, vols. I and II, 1868. Wallace: Darwinism, 

 ch. iv and vii, 1891. Burbank: New Creations in Fruits and 

 Flowers (catalogues of plant novelties), 1893 and succeeding 

 years, Marshall: Lectures on the Darwinian Theories, pp. 

 27-36, 1894. Romanes : Darwin and After Darwin, vol. I, pp. 294- 

 314, 1 896. Bailey : Survival of the Unlike, 1897. De Vries : S] ><-- 

 cies and Varieties, Their Origin by Mutation, 1905. Bailey: Plant 

 Breeding, 4th ed., 1906. Harwood: New Creations in Plant Life, 

 1906. 



CHAPTER VII. THEORIES OF SPECIES-FORMING AND DESCENT 



CONTROL. 



Eimer: Organic Evolution, 1890. Romanes: Darwin and After Dar- 

 win, III, 1897. Conn : Method of Evolution, ch. vii and viii, 1900. 

 Packard: Lamarck, His Life and Work, 1901. Morgan: Evolu- 

 tion and Adaptation, 1903. Weismann: The Evolutionary The- 



