Appendix 



wall of the uterus of the mother. Of this sub- 

 class, Placentalla, several orders interest us: i. 

 Cetacea (whales) very early assumed an aquatic 

 life. 2. Rodents are represented by rabbits, 

 squirrels, woodchucks, rats, and mice. 3. Un- 

 gulates Include horses, cows, sheep, deer, ele- 

 phants, rhinoceros, and others, a very large and 

 flourishing order. 4. Carnlvora. Examples: 

 dogs, wolves, foxes, cats, weasels, bears, and 

 hyenas. 5. Lemurs, now found mostly In 

 Madagascar, were the ancestors of the next or- 

 der. 6. Primates Include monkeys and apes. 

 At the head of the latter stand the so-called an- 

 thropoid apes, the gibbons, orang, chimpanzee, 

 and gorilla. Probably no one of these recent 

 forms represents the ancestor of man. 



Chart II shows the great groups of the animal 

 kingdom arranged In the form of a genealogical 

 tree. 



Chart III shows more fully the genealogical 

 tree of vertebrates. Pithecanthropus Is the form 

 between apes and man discovered by DuBois In 

 Java. For further account of this remarkable 

 form se5 Nature^ vol. II, 1895, p. 291 ; vol. llil, 

 pp. 116, 296; Amer, Joiirn. Sci., vol. Ixlx, 1895, 

 p. 144. For similar and better charts see Cope, 

 15 211 



