312 



MEACHAM, HOPFIELD AND ACREE 



poured and inoculated. Table 1 shows the average radial growth 

 of the culture in fifteen days at 25°C. The curve sheet contains 

 a graph prepared upon the basis of these data, and shows! the 

 decrease in growth with increase of salt concentration. 



FlG.'l 



It is clear from the above table that sodium chloride is only 

 mildly toxic to E. parasitica and that solutions as concentrated 

 as 0.63 N, or 3.65 per cent, decrease the growth to possibly 25 

 per cent of the normal value under the conditions used. Al- 



