0 50 100 MIN. 
Fig. I, Curves showing the resistance of Laminaria in solutions of various salts: 
A, in magnesium sulphate; B, in one sixth magnesium citrate and five sixths magnesium 
chloride; C, in magnesium chloride of the same conductivity as that represented by curve 
B; D,m one third magnesium citrate and two thirds magnesium chloride; E, in magnesium 
chloride of the same conductivity as that represented by curve D; F, in one third aluminum 
citrate and two thirds aluminum chloride; G, in aluminum chloride of the same conduc- 
tivity as that represented by curve F. Ordinates represent resistance (expressed as per- 
centage of the resistance in sea water, which is taken as loo percent). Abscissae represent 
time in minutes. 
