10 CONTENTS 



ADAPTATION FOR RESPIRATION AND EXCRETION 



PROBLEM PAGE 



LI. A study of the organs and process of respiration , . 291 

 LII. A study of the products of respiration . . . . 296 

 LITE. A study of ventilation . . . ' . * . . * . 299 

 LIV. Part I (Experimental). To study some of the functions 



of the skin of man . . . . -.',.. . 305 

 LIV. Part II (Summary). A final study of the changes in the 

 composition of the blood as it passes through various 

 organs of the body .... . .' . 308 



NERVES AND THEIR CONTROL 



LV. A study of the nervous system, reactions to stimuli, and 



habit formation . . '. . . . . . . . 312 



PERSONAL AND CIVIC HYGIENE 

 LVI. A study of personal and civic hygiene . ?..'"-;." . 320 



