viii. Ilhisfrnfioiis. 



LECTURE IV. 



PAGE. 



Fig. 35.^ — Anodic and Kathodic alterations of excitability of human 



nerve ---------- 82 



36. — Excitability and zincability under the Anode and Kathode 84 



^y. — A polarisation cell -------- 86 



38. — Internal polarisation of the human subject - - - 90 



39. — Anodic extra-polar currents of a core-model - - - 92 



40. — Kathodic extra-polar currents of a core-model - - 93 



41. — Electrolysis at four surfaces ------ 95 



42. — Extra-polar currents of frog's nerve - - - - 96 



43. — Extra-polar currents of mammalian nerve - - - 97 



LECTURE V. 



44. — Anelectrotonus and Katelectrotonus . . . . 102 



45. — Influence of ether upon An. ------ 105 



46.— Influence of chloroform upon An, ----- 105 



47. — Schema of electrolysis in a medullated nerve fibre - - 109 

 48. — ^An. and Kat. of frog's nerve - - - - - -in 



49. — Von Fleischl's deflection - - 115 



50. — An. and Kat. of mammalian nerve ----- 120 



LECTURE VI. 



51. — Influence of CO., on K. ------ - 125 



52. — Influence of COo on A. - - - - - - - '25 



53.— Influence of COo on A. ------- 125 



54.— Influence of alkali (KOH) on A. and K. - - - - 128 



55. — Influence of acid (propionic) on A. and K. - - - 128 



56. — Influence of ammonia on A. and K. - - - - 129 



^7. — Influence of CO2 on A. and K. ----- 129 



58. — Influence of tetanisation on A. and K. - - - - 129 



59. — Influence of CO2 on A. ------- 130 



60. — Influence of tetanisation on A. - - - . . i^o 



61. — Influence of CO. on A. ------- 131 



62, — Influence of tetanisation on A. - - - - - I3- 



63. — Influence of rise of temperature on A. and K. - - 134 



64. — Plan of connections for electrotonic decrements - - 136 



65. — Anelectrotonus and Katelectrotonus - - - - ^37 



66. — Flan of connections for polarisation increments - - 138 



67. — Nerve currents summarised - ----- 143 



