273 
Fungi at various Temperatures , &c. 
about o*2 cm. The effect of making this small correction is to increase the 
relative retarding effect (as measured by dividing the growth in C 0 2 by 
that in air), and more particularly is this the case for growth at the lower 
temperature. 
Fig. 3. Growth of Botrytis cinerea on potato agar at laboratory temperature (l) and 
in refrigerator (r). 
Fig. 4. Growth of Fusarium sp. on potato agar at laboratory temperature (l) and in 
refrigerator (r n . 
The effect under consideration becomes still more pronounced on 
comparing growth at 1 5 0 with that at temperatures lower than 5 0 , e. g. 
at 3 0 as in Figs. 3 and 4, which refer to experiments with Botrytis 
cinerea and Fusarium sp. on potato agar at laboratory temperature (15-18°) 
