CONTENTS xi 



CIRCULATION 



PAGE 



1. General Arrangement 225 



2. The Central Pump The Heart . . . . . .227 



3. Circulation in the Blood and Lymph Vessels .... 258 



SECTION VI 



SUPPLY OF NOURISHING MATERIAL TO THE BLOOD AND LYMPH, AND 



ELIMINATION OF WASTE MATTER FROM THEM 

 I. KESPIRATION . . 294 



II. FOOD AND DIGESTION . . ... . . . . . . 326 



a. Food . . . ' . ... . . . . . 326 



b. Digestion . . 337 



c. Absorption of Food 379 



d. Fate of the Food Absorbed . . . . . . .381 



e. General Metabolism 392 



/. Dietetics . ~ . . 397 



SECTION VII 

 INTERNAL SECRETIONS OR HORMONES 



Their Production and Action 404 



SECTION VIII 

 EXCRETION OF MATTER FROM THE BODY 



1. Excretion by the Lungs (see p. 294). 



2. Excretion by the Kidneys 



Urine 



Secretion of Urine Kidney 



3. Excretion by the Skin . 



PART III 



REPRODUCTION 432 



APPENDIX ....... 443 



INDEX ........ 44 9 



ERRATA . .... 464 



