174 



INDEX 



Electrical fishes, 75 ; organs, 76 ; organs 



of torpedo, 78. 

 Electrocution of eyeball, 49. 

 Electrodes, 155 ; fallacy of, 129, 130, 



133. 

 Electrometer, capillary, 29, 100, 162. 



Rngelinann and Grijns on action of 

 anaesthetics, 39 ; Engelmann on 

 nerve-skin, 61, 63 (fig. 29), 65 ; on 

 skin, 138. 



Ether, action of, 39. 



Evaporation current, 136. 



Excitability of vegetable protoplasm, 

 12, 19. 



Excitation, indirect (of skin), 60, 65 ; 

 direct (of skin), 65 ; of cat's pad, 101 ; 

 summating effect of, 68 (fig. 31) ; 

 effect of, direct or indirect, 83. 



Eyeball, currents in, 10, 11, 12, 19, 25 ; 

 as an optical instrument, 22 ; electri- 

 cal effects of light and of electrical 

 excitation, 23 (fig. 8), 55 ; normal 

 response in, 27 ; three types (fig. 13), 

 30, 50; massage of, 31 ; tetanisation 

 of, 42; electrocution of, 49; galvanic 

 current through, 52. 



FALLACY, of electrodes, 113, 130. 

 Fishes, electrical, 75. 

 Fleischl, Von, on nerve, 130, 132. 

 Frog's tongue, 11 1. 



GALVANISATION through eyeball, 52. 

 Galvanometer, description of, 151. 

 Geranium leaf, 109. 

 Gotch on electrical fishes, 75 ; on 



malapterurus, 78, 81, 142. 

 Gymnotus, 79, 80. 



Hering on colour-vision, 34 ; on 

 positive polarisation, 73, 90. 



Hermann, polemic with du Bois-Rey- 

 mond, 14, 90, 121 ; on nerve-skin 

 preparation, 61, 63 (fig. 29) ; on 

 positive polarisation, 73 ; on cat's 

 skin, 97 ; on effects of atropin, 122. 



Hesitation, period of, in eye, 28, 33. 

 Holmgren, photoretinal currents, 10, 



25- 



Homodrome currents, 47. 

 Human skin, 86, 115, 116, 117, 119. 



IVY-LEAF, electrical response in, 13, 



19. 



Ionic velocities, 138. 

 Ions, importation of, 125, 147. 



KATAPHORESIS, 133. 



Keyboard, description of, 155. 



Kiihne and Steiner on accidental 



current in retina, 27 ; Kiihne, light 



on retina, 54. 



LATENCY in eyeball, 28 ; in skin, 61 

 (fig. 28), 99, 105. 



Lens currents, 56. 



Life, signs of, 3 ; latent, 5. 



Light, action of, on eyeball, 55. 



Lippmanifs capillary electrometer, 

 162. 



Living matter, properties of, 3. 



Loeb, osmotic pressure of muscle, 134. 



Lost-time, physical, 29 ; in oxidised 

 copper plate, 29 ; in cat's nerve ex- 

 citation, 105. 



Litchsinger, on cat's skin, 97, 122. 



MacDonald, 72, 140, 144. 



MacKendrick and Dewar on latency 

 in eyeball, 28. 



Malapterurus, 78, 79, 81. 



Malpighian layer, 82, 83. 



Man, skin of, 119 (fig. 51). 



Matter, properties of living, 3 ; divisons 

 of, 4 ; currents of, 85. 



Mercuric chloride on skin, 65, 83. 



Mucous membranes, 87. 



Muscle, negative of variation, 4 ; con- 

 traction of, 8, 19 ; modification of, 

 8 1 ; (nerve-) preparation, 92 ; by 

 A C B plan, 94. 



