ANTAGONISM 



141 



given in Table IX. The electrical resistance of the tissue 

 in these solutions, is shown in Fig. 59. The curves are in 

 good agreement with the formula 



Ka 



Resistance 



-■™(-^.)( 



— KaT - 



e — e 



KmT\ —KmT 



j+90e +10 



This is evident from Figs. 59 to 63, which show the curves 

 calculated by means of this formula and also the 

 observed values. 



As previously explained, this formula is based upon 

 the assumption that the electrical resistance is propor- 



TABLE rx. 



Composition of Mixtures. 



tional to a substance, M, which is formed and decomposed 

 by the reactions 



0—^S — >A — ^M — >B 



We assume that when the tissue is transferred from sea 

 water to NaCl, or to CaClz, or to a mixture of these two 

 solutions, the reactions — >8 — >A cease, while the 

 reactions A — >M — >B continue. By assuming various 

 values of K^ (the velocity constant of the reaction A — >• 

 M) and of Km (the velocity coiistant of the reaction ilf — > 

 B), and employing these in the formula, we obtain curves 

 which closely approximate those which we find by experi- 



