CONTENTS. ix 



PAGE 



Homologies of the supporting tissues. Hygiene of the develop- 

 ing skeleton. Adipose tissue 100 



CHAPTER IX. 



THE STRUCTURE OF THE MOTOR ORGANS. 



Motion in animals and plants. Amoeboid cells. Ciliated cells. > 

 The muscles. Histology of striped muscle. Unstriped mus- 

 cles. Cardiac muscular tissue. The chemistry of muscular 

 tissue. Beef -tea and Liebig's extract. . .113 



CHAPTER X. . 



THE PROPERTIES OP MUSCULAR TISSUE. 



Contractility, irritability of muscle. A simple muscular con- 

 traction. Tetanus. Causes influencing the degree of muscu- 

 lar contraction. The measurement of muscular work. Mus- 

 cular elasticity. Physiology of plain muscular tissue. Hy- 

 giene of the muscles. Exercise 128 



CHAPTER XL 



MOTION AND LOCOMOTION. 



The special physiology of muscles. Levers in the Body. The 

 erect posture. Walking. Running. Leaping 143 



CHAPTER XII. 



THE ANATOMY OP THE NERVOUS SYSTEM. 



Nerve-trunks. Plexuses. Nerve-centres. The cerebro-spinat 

 centre and its membranes. The spinal cord. The spinal 

 nerves. The brain. The cranial nerves. Ganglia and com- 

 munications of the cranial nerves. The sympathetic system. 

 The sporadic ganglia. The histology of nerve-fibres. The 

 histology of nerve-cells. The structure of the spinal cord 154 



