526 Chaudhuri. — A Study of the Growth in 
for forty-eight hours, there was no survival, but on pea agar, corn-meal agar, 
and prune agar it survived the temperature for twenty-four hours, but not 
on potato mush or tomato mush. When, however, the period was reduced 
4 5 6 7 & 9 10 11 12 13 14 15 16 days 
Fig 5. Curves showing the relative area (diameter in mm. squared) covered by the mycelium 
at 21 0 C. and 25 0 C. in agar cultures of Coon’s medium, full strength (N/i), half strength (N/2), 
and quarter strength (N/4). 
to eighteen hours it survived on all the media. The power of withstanding 
high temperatures agrees to a certain extent with that recorded for the two 
strains used by Edson and Shapovalov, though both had a higher maximum 
temperature. They write : ‘ The two strains do not survive exposure for 
several days to a temperature of 35 0 C. or higher;’ and again: ‘With 
