Vlll CONTENTS 



CHAPTER VII 



PAGE 



NERVE ...... 73 



CHAPTER VIII 



IRRITABILITY AND CONTRACTILITY ..... 81 



CHAPTER IX 



CHANGE IN FORM IN A MUSCLE WHEN IT CONTRACTS . .87 



Instruments used ..... 87 



Simple Muscle Cur re. ... 96 



The Muscle- Wave ..... 100 



Effect of two Successive Stimuli . . . . . .101 



Effect of more than two Stimuli . . . . .101 



Tetanus ....... .101 



Voluntary Tetanus ...... 104 



CHAPTER X 



EXTENSIBILITY, ELASTICITY, AND WORK OF MUSCLE . . . .108 



CHAPTER XI 



THE ELECTRICAL PHENOMENA OF MUSCLE . . . .116 



CHAPTER XII 



THERMAL AND CHEMICAL CHANGES IN MUSCLE . . . . ,129 



Fatigue ......... 132 



Rigor Mortis ...... 136 



Chemical Composition of Muscle . . . . .136 



CHAPTER XIII 



COMPARISON OF VOLUNTARY AND INVOLUNTARY MUSCLE 140 



