( 395 ) 



whilst the observations in the 5^'^ and 6''^ table liaAe l)een published 

 by Naavalichin ^) : the school of Heidenhain and tlial of Fick are 

 both represented. 



The hiü;her importance of the series given hereafter, consists chiefly 

 in the fact of their having- served to determine as well tiie mechanical 

 response as the thermal effect with stimuli of increasing magnitude. 



In the series of Daxilewsky a double Ihigh-muscle-jn-eparation of 

 the frog after the method of Fick was employed, whilst Nawalichin 

 made use of a single gastrocnemius. 



The muscle contracted isotonically, whilst simultaneously the thermal 

 and the mechanical effect of each conti'action, were recorded. As it 

 has been proved with sufficient accuracy in our tirst pai)ers that 

 oui' formula may be applied to isotonic twitches, these may now 

 ser\'e us as a means of control. 



In the following series the magnitude of stimulus is again indicated 

 in the first column by R. The second column contains the calculated 

 height of twitch, the third column 'the observed height; the fourth 

 column the calculated and the fifth the observed thermal effect. 

 The constants .!,„, B^v and Cw were used for calculating the thermal 

 effects, the constants Ah, Bh and Ck for calculating the heights of 

 the contractions. 



TABLE IV. 



Danilewsky 1. c. Load 60 Gr. fig. 4. 



.4a = 40 Bh = 0.05 Ch = 14.4 



A„=: 14.55 A« = 0.02 Ce„=14.4 



1) Nawalichin, Mvotlicrmisclie Untersuchungen. POugcr's Arcliiv, Bd. 14, p. ^297, 



> 



