xiv LIST OF ILLUSTRATIONS 



PART II Black and White. Continued. 



Fio. PAGE 



102. Showing a Node of Ranvier ..... 192 



103. Showing a Node of Bamboo . . . . .193 



104. Degeneration of Nerve to Node of Ranvier . . .194 



105. Diagram of Chain of the Sympathetic . . .197 



106. Neurons of the Motor Path (Physiological) . . .199 



107. The same reproduced artificially .... 199 



108. Forms of Spinal Ganglion-Cells .... 200 



109. A Unipolar Cell (Rabbit) ^ .' . . .205 



110. A Bipolar Cell (Fish) ; -. . . .205 



111. Sketch of Metallic Ball for Electrification ""- " . . 206 



112. A Multipolar Cell (Physiological) . ^ . . 208 



113. A Multipolar Cell (Electrical) . .- jj& . 208 



114. A Multipolar Cell (Electrical) . .- ]V . 209 



115. A Multipolar Cell (Fish) .... . . . . 211 



116. Reflex Action . ^. . . . . 212 



117. Root Fibres of the Cranial Nerves . . - . .214 



118. Plan of the Origin of the Fifth Nerve . , .215 



119. Pigmented Cells of the Retina . . v'* . 221 



120. Section through the Human Eye , . \ .224 



121. Section through the Macula Lutea and Fovea . . . 225 



122. Diagrammatic Section of the Human Retina . . \ 225 



123. Scheme of the Organ of Hearing . . '.. . . 229 



124. Square Case Kelvin Reflecting Astatic Galvanometer . . 235 



125. Milled Torsion Head . . . , . .236 



126. A d'Arsonval Galvanometer . . . . y . 238 



127. Galvanometer Scale and Lamp . . . , . 239 



128. Transparent Galvanometer Scale and Stand . . . 240 



129. Paraffin Lamp for use with Galvanometer . . . 240 

 130-131. Diaphragms -. ; . >^ y 4 . . 241 

 182-133. Short-Circuit Keys . . . . .241 



184. Electrode ....... 242 



185. Thumb-Piece . . . . . .243 



136. Method of Connecting . . . . 248 



187-138. Electrodes . . . . . 248-4 



189-140. Diagrams illustrating Ohm's Law .... 248 



141-142. Diagrams of Fall of Potential . . . .258 



143. Illustrating Deflection in Lobar Pneumonia . . . 255 



143A-143C. Differences of Level and Potential . . 256-7 



144-146. Illustrating Earth and Cloud . . . .268-9 



