LIST OF WOODCUTS. 



FTOJBB 



1. Human egg-cell 



2. Human liver-cell . 



3. Epithelium cell from tongue 124 



4. Thorny cells of epidermis 



5. Human bone-cells 



6. Enamel cells of tooth 



7. A mind-cell 



8. Blood-cells in process of 



division . . * 



9. Active lymph-cells . 



10. Primitive eggs of various 



animals .... 



11. Mammalian egg-cell . 



12. Egg-cell of Hen 



13. An Amoeba . . . 



14. Egg-cell of a Chalk-sponge 



15. Blood-cells absorbing mat- 



tor .... 



16. Blood-cells dividing . 



17. Sperm-cells (seed-cells) . 



18. Fertilization of mammalian 



egg .... 



19. Monerula of Mammal 



20. Moneron dividing . . 

 12. Cytula of Mammal . . 



PAOE 



Germination of a Coral . 190 



Gastrulaof Gastrophysema 193 



Gastrula of Sagitta . . 193 



Gastrula of Uraster . . 193 



Gastrula of Nanplius . 193 



Gastrula of Limnseus . 193 



Gastrula of Amphioxus . 193 



Gastrula of Olynthus . 195 

 Cells of primary germ- 

 layers . . . .198 



Cleavage of Frog's egg . 203 



35. Gastrulationof the Toad 206 



Monerula of Eabbit . . 210 



Cytula of Babbit . . 210 



Babbit-egg with two cells 210 



Babbit-egg with four cells 212 



Babbit-egg with eight cells 212 



Gastrula of Babbit . . 213 



Egg of an Osseous Fish . 217 



Gastrnla of an Osseous Fish 219 



Egg-cell of Hen . . 223 



Egg-cleavage of Bird . 225 



Mulberry-germ of Chick . 228 



Bladder-germ of Chick . 228 



Invaginated germ of Chick 228 



