xv i List of Illustrations. 



PAGE 



Alimentary Canal of an Insect, . . . . 195 



Skull of Carnivora, . . . . . . . 1 96 



Glands in the Goat of the Stomach, . . . . . 197 



Ciliated Epithelium, . '. . . . . .198 



Villi and Follicles of Intestines, . . . . .199 



Lymphatics of Small Intestines, ..... 200 



Heart and Lungs, ....... 203 



Heart and Lungs, showing Blood and Air Vessels, . . . 204 



Arteries and Veins of Head and Neck, .... 205 



Capillaries in the Skin, ...... 206 



Injected Veins from Coat of Intestine, ... . . 206 



Circulation of the Hand, ...... 207 



Arteries and Veins of an Intestinal Villus, . . . . 207 



Circulation in a Frog's Foot, ..... 208 



Section of Kidney and Portion Magnified, . . . .212 



Section of Skin and Sweat Gland Magnified, . . .214 



Vertical Section of the Skin, ..... 216 



Uterus, Ovaries, Fallopian Tubes, ..... 252 



Anatomy of the Testes, . . . . . .253 



Evolution of Spermatozoa, . . . . . .254 



Foetus in Utero, ....... 258 



Human Ovum, ....... 259 



Ideal Section of Hen's Egg, . . . . 259 



Hen's Egg, Third Day of Incubation, .... 260 



Embryo Fowl of Eight Days, . . . . .261 



Mammal Ovum, ....... 261 



Diagram of Natural Birth, ...... 265 



Mammary Gland, , . 266 



