XIV LIST OF ILLUSTRATIONS. 



FIG. PAGE 



140. Blix's myograph. (Pick.) 218 



141. Curve of superposed contractions. (Stirling, ) 219 



142. Scheme for tetanus. (Stirling.) 220 



143. Tetanus (incomplete) curves. (Stirling. ) 220 



144. Tetanus interrupter. (Stirling.) 221 



145. Metronome. (Petzold.) 222 



146. Magnetic interrupter. (Cambridge Scientific Instrument Co.) . '223 



147. Fatigue curve. (Stirling.) 224 



148. Fatigue curve, slow drum. (Stirling. ) 224 



149. Muscle wave apparatus . . . . . . . 227 



150. Marey's registering tambour ........ 228 



151. Pince myographique. (Marey.) 228 



152. Wild's apparatus. (Stirling. ) 229 



153. Fick's tension myograph. (Schenk.) 230 



154. Mosso's ergograph 231 



155. Thomson's galvanometer. (Elliott.) . . . . . . . 232 



156. Lamp and scale for 155 232 



157. Non-polarisable electrodes 232 



158. Shunt. (Elliott.) 234 



159. Scheme for galvanometer. (Stirling.) ...... 234 



160. Brush electrodes. (V. Fleischl.) 236 



161 D 'Arson val's electrodes. (Verdin.) 236 



162. Non-polarisable nerve electrodes 238 



163. Galvani's experiment. (Stirling. ) . . . . . . 239 



164. Secondary contraction 240 



165. Scheme of secondary contraction. (Stirling.) 241 



166. Scheme of paradoxical contraction. (Stirling.) 241 



167. Kiihne's experiment. (Stirling.) 243 



168. Scheme of electrotonic excitability. (Stirling.) ... . . 244 



169. Scheme of electro tonus. (Stirling.) ....... 244 



170. Curve of electrotonus. (Stirling.) 245 



171. Scheme of electrotonus. (Landois and Stirling.) . . . . 246 



172. Pohl's commutator with cross-bars 246 



173. Scheme of Pfliiger's law of contraction. (Stirling.) .... 247 



174. Scheme for kathodic stimulation 249 



175. Du Bois Raymond's rheochord ........ 250 



176. Scheme of velocity of nerve-energy. (Stirling.) .... 251 



177. Kiihne's gracilis experiment. (Stirling.) 253 



178. Scheme for unequal excitability of a nerve- (Stirling.) . . . 255 



179. Scheme for Griinhagen's experiment 257 



180. Frog's heart from the front. (Ecker.) ...... 260 



1 8 1. Frog's heart from behind. (Ecker.) ....... 260 



182. Simple frog's heart lever 263 



183. Tracing of frog's heart. (Stirling.) . . . '. . . . 263 



184. Effect of temperature on frog's heart tracing. (Stirling. ) . . . 264 



185. Marey's heart lever .......... 265 



186. Francois-Frank's lever for heart of tortoise. (Verdin.) . . . 265 



187. Gaskell's lever. (Stirling.) . 266 



1 88. Tracing of frog's heart taken with 186. (Stirling.) . . . .266 



189. Heart-tracing, varying speed of drum. (Stirling.) .... 267 



