X 
CONTENTS. 
CHAPTER II.— Continued . 
PAGE 
Radiata . 123 
ECHINODERMATA. 125 
ACALEPM. 128 
POLYPIFERA. 129 
Protozoa . 135 
rhizopoda ................ 136 
INFUSORIA . 139 
PORIFERA. 149 
CHAPTER III. 
Nature and Sources of Animal Food ....... , 142 
CHAPTER IY. 
Digestion and Absorption .162 
prehension of food . 163 
mastication ..166 
IN SALIVATION ..176 
DEGLUTITION. 178 
DIGESTIVE APPARATUS. 181 
GASTRIC DIGESTION : — CHYMIFICATION . 188 
INTESTINAL DIGESTION :—CHYLIFICATION. .193 
DEFECATION. 195 
ABSORPTION OF NUTRITIVE MATERIAL ....... 196 
SANGUIFICATION .. ...199 
CHAPTER V. 
Of the Blood, and its Circulation .. 202 
PROPERTIES OF THE BLOOD.203 
CIRCULATION OF THE BLOOD.216 
CIRCULATING APPARATUS OF THE HIGHER ANIMALS . . 222 
FORCES THAT MOVE THE BLOOD.232 
COURSE OF THE BLOOD IN THE DIFFERENT CLASSES OF 
ANIMALS.240 
