viii CONTENTS. 



CHAPTER v. 



JOINTS. 



PAGE 



Muscles and joints Structure of the hip joint Ball and socket 

 joints Hinge joints Pivot joints Gliding joints Disloca- 

 tions Sprains 59 



CHAPTER VI. 



THE MUSCLES. 



The parts of a muscle The origin and insertion of muscles 

 Varieties of muscles How muscles are controlled Gross 

 structure of a muscle Histology of muscle Plain muscular 

 tissue The muscular tissue of the heart The chemical 

 composition of muscle Beef tea and meat extracts 67 



CHAPTER VII. 



MOTION AND LOCOMOTION. 



The special physiology of muscles Levers in the body Pulleys 

 in the body Standing Walking Running Hygiene of 

 the muscles Exercise 80 



CHAPTER VIII. 



WHY WE EAT AND BREATHE. 



How it is that the body can do work The conservation of en- 

 ergy Illustrations Why we need food Why the body is 

 warm The influence of starvation upon muscular work and 

 animal heat Oxidations in the body The oxygen food of 

 the body Appendix 93 



CHAPTER IX. 



NUTRITION. 



The wastes of the body Receptive and excretory organs The 

 organs and processes concerned in nutrition 105 



CHAPTER X. 



FOODS. 



Foods as tissue formers What foods must contain The special 

 importance of albuminous foods The dependence of animals 



