xiv LIST OF ILLUSTRATIONS. 



no. PAGB 



34. Grove's Cell, 131 



35. Bichromate Cell 132 



36. Detector (Elliott), 132 



37. Du Bois Key, 133 



38. Scheme of 37 (Stirling), . . . .' . . . .133 



39. ........ 134 



40. Plug Key, 135 



41. Morse Key (Stewart and Gee), 135 



42. Spring Key (Elliott) 136 



43. Rheochord (Stirling, . . . . . . . .136 



44. Rheochord, 137 



45. Reverser (Elliott), 139 



46. Induction Coil, 140 



47. Du Bois Electrodes, 141 



48. Break Extra- Current (Stirling), 144 



49. Helmholtz's Modification, 144 



50. Frog's Leg-Muscles (Ecker), 146 



51. Frog's Sciatic Nerve (Ecker), 146 



52. Nerve-Muscle Preparation, ....... 149 



53. Straw-Flag (Stirling), . 151 



54. Scheme for Single Induction Shocks (Stirling), .... 152 



55. Scheme of Constant Current (Stirling), 153 



56. Frog's Sartorius (Ecker), 154 



57. Rheonom (Stirling), . 155 



58. Curare Experiment, . . . 160 



59. Pohl's Commutator (Elliott), 161 



60. Revolving Cylinder, . 162 



61. Moist Chamber (Stirling), . . .164 



62. Crank Myograph (Stirling), . . ' 167 



63. Pendulum Myograph, . . 169 



64. Pendulum Myograph Curve (Stirling), 170 



65. Spring Myograph, 171 



66. Revolving Drum, 172 



67. Time Marker (Stirling), 173 



68. Electric Signal (Stirling), . . . . . . .173 



69. Muscle Curve with Load (Stirling), . . . . . . 175 



70. Veratria Curve (Stirling), . . . . . . . .175 



71. Fatigue Curve (Stirling), . . . . . . . .178 



72. Pfliiger's Myograph, . ..' ' '" . . 179 



73. Scheme for Tetanus (Stirling), 182 



74. Tetanus Curves (Stirling), . . . . . . . .182 



75. Tetanus Interrupter (Stirling), .183 



