742 COMPARATIVE ELECTRO-PHYSIOLOGY 



I'AGE 



226. Abnormal diphasic converted into normal negative after tetanisation 476 



227. Conversion of abnormal positive to normal negative through inter- 



mediate diphasic under increasing intensity of stimulation . . 477 



CONDUCTIVITY BALANCE 



228. Effect of Na 2 CO 3 solution on responsivity of frog's nerve . . . 485 



229. Effect of CuSO< solution on responsivity of frog's nerve . . . 485 



230. Effect of CaCl 2 on responsivity of plant nerve 486 



231. Effect of KC1 486 



232. Comparative effects of NaCl and NaBr on responsivity . . . 487 



233. Effect of dilute solution of Na,CO ;J 488 



234. Effect of stronger solution of Na^CO, 489 



235. Excitability versus conductivity under KI 491 



236. Excitability versus conductivity under Nal ..... 492 



237. Effect of alcohol on responsivity of frog's nerve .... 492 



238. Effect of alcohol on receptivity of plant nerve ..... 493 



239. Effect of alcohol on conductivity of nerve ..... 493 



240. Effect of alcohol on responsivity of nerve . . . . . . 494 



241. Receptivity verstis responsivity under alcohol .... 495 



242. Effect of cold on conductivity 499 



243. Effect of warmth on conductivity 501 



244. After-effect of moderate stimulation on conductivity and excitability 504 



245. After-effect of strong stimulation on conductivity and excitability . 505 



MECHANICAL RESPONSE OF ANIMAL NERVE 



246. Mechanical response of frog's nerve under electric tetanisation . . 509 



247. Effect of ammonia on mechanical response . . . . -516 



248. Effect of morphia .......... 516 



249. Effect of aconite 516 



250. Effect of alcohol 517 



251. Effect of chloroform 518 



252. Conversion of abnormal positive to normal negative through diphasic, 



by tetanisation . . . . . . . . . . 521 



253. Occurrence of staircase effect 524 



254. Comparison of mechanical responses in animal and plant nerve . . 528 



255. Mechanical response of optic (sensory) nerve . . . . -529 



256. Fatigue of conductivity in nerve of gecko . ..... 530 



257. Transient enhancement of contraction on cessation of tetanisation . 536 



258. Multiple mechanical response in nerve as effect of drying . . . 539 



MECHANICAL RESPONSE OF PLANT NERVE 



259. Enhancement of excitability after tetanisation 554 



260. Effect of light in enhancing excitability of plant nerve . . . 556 



261. Determination of velocity by mechanical response.- of plant nerve . 525 



