524 Chaudhuri.—A Study of the Growth in 
Measurement of spread of colonies at different temperatures after 
fifteen days : 
io° C. 12° C. i 4 °C. i6°C. 18° C. 2i°C. 22. 5 °C. 25 0 C. 27 0 C. 
Average diameter in mm. o 10 14 35 45 55 60 45 o 
Fig. 3. The effect of different temperatures on (1) the spread after fifteen days of the mycelium 
on Coon’s medium in terms of the diameter of the circular area covered, (2) the length of germ tubes 
developing from conidia after twenty-four hours in hanging drops. The right-hand vertical scale is that 
of the length of the germ tubes, the left-hand that of the diameter of the mycelial areas. 
Measurement of germ tubes after twenty-four hours’ growth, the unit 
being 0-5 \x : 
12° C. 16, 16, 15, 18, 12, 12, 14, 10, 7, 8, 10, 15, 10, 8, 10, 16, 12, S, 10, 15, 25, 25, 15, 20, 28, 
18, 15, 18,18, 15, 12, 15, 10, 10, 10, 8, 15, 18, 20, 12. Average, 14 = 28 ft- 
I 4 ° C.—30, 32, 24, 15, 15, 22, 28, 25, 30, iS, 16, 14, 12, 20, 15, 25, 18, 30, 25, 10, 10, 12, 20, 22, 
22, 18, 18, 20, 20, 18,22,30, 30, 22, 30, 12, 18, 12, 15, 30. Average, 21 = 42 ft. 
i6°C.—42, 45, 48, 25, 35, 28, 28, 55, 25, 40, 45, 50, 35, 40, 45, 55, 38, 22, 32, 40, 20, 25, 28, 24, 
30, 35, 20, 60, 50, 55, 25, 20, 40, 35, 30, 25, 45, 50, 40, 35, Average, 36 = 72 ft. 
