1 84 



THE EVOLUTION OF 6 EX. 



SUMMARY. 



I. Artificial division may be readily utilized as a means of multiplication in 

 plants and in lower animals. 



II. Regeneration of lost parts is very common both in plants and animals. 



III. Asexual reproduction from continuous budding to discontinuous 

 multiplication has many degrees, leading on to the sexual process. 



IV. It occurs throughout the series from Protozoa to Tiaricata. 



LITERATURE. 



General Works cited ; the ordinary Zoological and Botanical Text-books ; 



and, 

 Lang, A. — Der Einfluss des Festsitzen auf den Thieren, und der Ursprung der 



ungeschlechtlichen Fortpflanzung. Jena, 1886. 

 Spencer. — Principles of Biology. London, 1S66. 

 Haeckel. — Generelle Morphologic Berlin. 1S66. 

 Fredericq. — La Lutte pour 1 'Existence chez les Animaux Marins. Paris, 



1 8S9. ( For " Regeneration of Parts, ' ' &c. ) 



