MAMMALIA 



475 



follows : Man is mctazoan, triploblastic, chordate, vertebrate, penta- 

 dactyle, mammalian, eutherian, primate. 1 Excepting only the limb- 

 skeletons, whose parts cannot be identified with those of animals 

 lower than the Amphibia (p. 383), the main outlines of each of his 

 principal systems of organs may be traced back, like those of other 

 mammals, to the fishes, as has been shown in the course of the fore- 

 going chapters." In comparison with the rabbit, the following features 



amp. 



Fig. 354. — The lower 

 end of a vas (or duc- 

 tus) deferens of man, 

 with its seminal 

 vesicle. — From Cun- 

 ningham. 



amp., "Ampulla" of vas 

 deferens; d.ej., ductus 

 ejaculatorius ; zi.d., vas 

 deferens; v.s., vesi- 

 cula seminalis. 



Fig. 355. — A diagram of 

 the human uterus in 

 longitudinal section. At 

 the lateral angles the 

 Fallopian tubes have been 

 cut away. — From Cun- 

 ningham. 



1, Lateral angle of uterus; 2, 

 cavity of body ; 3, cavity of 

 cervix ; 4, vaginal cavity. 



of his anatomy may be mentioned, in addition to those which have 

 been stated in the last two paragraphs. The tibia and fibula are 

 not fused ; the fore-arm is capable of pronation and supination 



1 See pp. 143, 230, 339, 342, 419, 459, 461, 473. 



2 In making such comparisons the student will rind of use, as 

 summaries of the facts, the following diagrams, etc. : Figs. 264, 326, 

 329, 381, 19, the second and third paragraphs on p. 30, the account of 

 the skull of the rabbit on pp. 427-432, and Figs. 312, 316. 



