O 

 C 

 (0 

 -f-» 



• f— I 



CO 



C 

 o 



10 

 Min. 5 



Fig. 1. Curves showing the resistance of Laminaria in solutions of various 

 sodium salts: A in iodide; B in bromide; C in sulfocyanide; D in chloride; E in 

 nitrate; F in acetate; G in sulfate; H in tartrate; I in phosphate; J in citrate. 

 Ordinates represent resistances (expressed as per cent of the resistance in sea 

 water, which is taken as 100 per cent). Each point represents the average of 

 ten experiments. Probable error less than 10 per cent of the mean. 



536 



