LIST OF PLATES. 



-•o*- 



PAGE 



Plate T. (Frontispiece). Develoi^ment of the face in Mammals 



(Man, Bat, Cat, Sheep) in three different stages i 



Explanation vol. ii. 346 ; 



Plate II. (between p. 240 and p. 241). Total egg-cleavage. Gas- ' 



trulation of holoblastic eggs (primordial and unequal cleavage) ! 



Explanation 240 '] 



Plate III. (between p. 240 and p. 241). Partial egg-cleavage. \ 



Gastrulation of meroblastic eggs (discoidal and superficial i 



cleavage) ... ... ... ... Explanation 240 ' 



Plate lY. (between p. 320 and p. 321). Diagrammatic transverse  



section through various ontogenetic and phylogenetic stages  i 



in the development of the human body, showing the formation ! 



of this from the four secondary germ-layers ... Explanation 321 

 Plates V. (between p. 320 and p. 321). Diagrammatic longitu- j 



dinal sections through various germ and tribal forms of Man, 1 



shoAving their formation from the four secondary germ-layers i 



Explanation 323 ' 



Plate YI. (between p. 362 and p. 363). Comparison of the ! 



embryos of a Fish, an Amphibian, a Reptile, and a Bird, in | 



tlu-ee different stages of evolution ... ... Explanation 362 ! 



Plate YII. (between p. 362 and p. 363). Comparison of the 

 embryos of four different Mammals (Pig, Ox, Rabbit, and 

 Man) in three different stages of evolution ... Explanation 362 j 



Plate YIII. (between p. 404 and p. 405). Representation of two i 



human embryos, the one of nine, the other of twelve weeks : \ 



the latter within the egg-membranes ... Explanation 405 i 



Plate IX. (between p. 404 and p. 405). Representation of a 

 human embryo of five months, natural size, within the egg- 

 membranes ... ... ... ... Explanation 405 



Plate X. (between p. 438 and p. 439). Germ-history of Ascidian 



and Amphioxus ... ... .-• .•• Explanation 436 



Plate XI. (between p. 438 and p. 439). Structure of the body 

 of Ascidian, Amphioxus, and larva of Petromyzon 



Explanation 437 



