[Vor. 8 
266 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
entirely used, nor was there any reversion of the reaction that 
might not be due to experimental error. The temperature of 
these experiments i is not as favorable for Botrytis as for the other 
organisms, and no doubt this is one factor in its less rapid growth. 
The peak of growth was reached for Penicillium by the twelfth 
TABLE XV 
s LL RELATIONS OF CERTAIN FUNGI ON MEDIA m a 
NESIUM SULPHATE. INITIAL Pg 5.5. EXPERIMENT 
Dry wt.| Final 
Fungus Days | (gms.) | Pa Sugar | Sulphates | H:S | Sporulation 
4 .8130 1.9 ES a 0 0 
T 1.0426 1.5 0 + 0 1 
A. ni 10 .8499 2.1 0 E 0 2 
nrc 12 | .7549| 1.9 0 E? 0 2 
15 .7409 2.9 0 ES 0 3 
18 .6072 2.9 0 + 0 4 
4 . 2466 5.3 + + 0 0 
7 . 9028 4.1 + — 0 1 
P | 10 1.1006 4.7 -— -< 0 1 
i a 12 | 1.0497 | 5.0 | Slight 4 0 1 
15 .8440 5.0 0 + 0 1 
18 .9560 5.1 0 + 0 1 
4 . 1480 5.3 + EN 0 1 
7 .4881 4.3 E 4 0 3 
: 10 . 7611 3.6 = E 0 3 
B. on, 12 | .8719| 2.9 + + 0 3 
15 . 8645 2.9 + + 0 3 
18 . 9728 3.1 = 4- 0 à 
Control | | 5.5 + + 0 
day, with sugar present in small amounts the fifteenth day, 
though a reversion of the reaction began after the seventh day 
and proceeded from Py 3.7 to 5.0, when the sugar had dis- 
appeared from the solution. 
Experiment 21.—To produce a solution with an initial Py of 
5.5, 5 ec. of sterile NaOH were added to each flask, hence this 
quantity of water was deducted from that added to each flask in 
