Fig. 2. Curves showing the resistance of Laminaria in solutions of various 

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

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

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

 water, which is taken as 100 percent). Each point represents the average of ten 

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



538 



