

CONTENTS. 



PART I.-ELECTRICITY AND MAGNETISM, AND THEIR 

 APPLICATIONS IN PHYSIOLOGY AND MEDICINE. 



CHAPTER PAGE 



I. FRICTIONAL ELECTRICITY 1 



II. CURRENT ELECTRICITY 13 



III. RESISTANCE OHM'S LAW MODES OF JOINING 



CELLS 26 



IV. INDUCTION AND INDUCTION COILS . . 34 

 V. EFFECTS OF THE ELECTRICAL CURRENT . . 50 

 VI. KEYS, COMMUTATORS, AND ELECTRODES FOR PHY- 

 SIOLOGICAL PURPOSES .54 



VII. EXPERIMENTS ON MUSCLE AND NERVE STIMULA- 

 TION ,62 



VIII. ELECTROTONUS .77 



IX. MAGNETS, AND THE ACTION ON THEM OF ELECTRIC 



CURRENTS ... . .90 



X. GALVANOMETERS . . . .96 



XI. THE USE OF THE GALVANOMETER IN PHYSIOLOGY 110 

 XII. THE GALVANOMETER AS A MEASURER OF TIME . 128 

 XIII. RESISTANCES AND THEIR MEASUREMENT. . . 134 

 XIV. THERMO-ELECTRIC CURRENTS . . 112 



XV. PHYSIOLOGICAL INDICATIONS FOR THE THERAPEU- 

 TICAL APPLICATIONS OF ELECTRICITY . . .148 



PART II. THE GRAPHIC METHOD. 



XVI. THE MEASUREMENT OF SMALL INTERVALS OF 



TIME 170 



XVIL THE MYOGRAPHION 175 



XVIII. THE TRANSMISSION OF MOVEMENT .... 184 



