172 INJUBY, EECOVEEY, AND DEATH 



is more rapid, the tissue being killed in 18 hours or less, 

 even in the most favorable solution. 



The experiments with cevadine were carried out dur- 



801% 



.oo5 



FIG. 75. Curves showing antagonism between NaCl and cevadine sulfate. Ordinates 

 represent net electrical resistance of Laminaria af/ardhii (expressed as per cent, of the normal) ; 

 abscissae represent concentrations of cevadine sulfate added to 0.52 M NaCl. The resistance 

 of the control at 150 minutes was 100%. Average of two experiments; probable error of the 



mean less than 5% of the mean. 



ing the day at 15 2, and the time curves in the various 

 solutions follow more or less closely a monomolecular 

 course. In the case of nicotine and caffeine (where the 

 experiment ran during the day and the following night) 

 this is not the case, except in the earlier part of the reac- 



