404 Horne and Williamson .— The Morphology and 
ture optima, the fact that E. catenulata was grown at a temperature below 
the optimum (25 0 C.) would not greatly affect the comparative value of the 
results. 
Growth in diameter (cm.) of E. viridescens in Solutions of Sugars. 
Sugar . 
Strength . 
Interval in hours . 
24 
48 
7 2 
96 
N /5 
o»8 
2-5 
3 * 5 . 
7*7 
Lactose - 
N/io 
N/50 
0.9 
0.9 
2.9 
2.85 
6-o 
5 -o 
^ T OC 
6 6 
l N/ioo 
i-i 
2-75 
4-7 
6-5 
r N 
0.4 
1.6 
3-3 
4*5 
N /5 
°*35 
2-5 
5 *° 
7.2 
Glucose - 
N/io 
o-8 
3-3 
5*5 
7-9 
N/50 
0.8 
3-85 
v t 1 
5-2 
7-3 
'N/100 
0-85 
2.9 
4.9 
7.0 
rN 
0-25 
i -3 
2.6 
4-2 
N /5 
N/io 
0.8 
5-7 
S. 4 
Sucrose- 
0.2 
T *9 
4.9 
7*2 
N/50 
o-8 
3 -° 
5*3 
7-3 
'-N/ioo 
o-S 
2.9 
4.9 
7 -i 
Control I 
. 
o-8 
2*6 
4-6 
6-6 
Control II. 
0.9 
2.65 
4-65 
6*55 
th in diameter (cm.) of E. 
catemdata in 
Solutions of Sug 
Sugar . 
Strength . 
Interval in hours . 
24 
48 
72 
96 
[N/5 
0.15 
0.65 
c ‘95 
2-55 
Lactoses 
N/io 
N/50 
0.25 
o -35 
0.7 
0-85 
i -5 
i -35 
2-3 
i-8 
.N/ioo 
o -35 
0.8 
1-2 
i -7 
(N 
0.1 
°*7 
1.6 
2-5 
N/5 
0-2 
1.0 
2-0 
2.85 
Glucose H 
N /io 
N/50 
0-4 
0.9 
1.8 
2.8 
O.25 
1.0 
i *7 
2*35 
v N/ioo 
o -3 
0.85 
i *5 
2-1 
r N 
0.15 
0.9 
1-65 
2-5 
Sucrose 
N /5 
0.2 
i-i 
2-0 
2.9 
N/io 
0-2 
1.1 
i -95 
2*75 
N/50 
0-3 
°-95 
i *55 
2«2 
,N/ioo 
o -3 
0.8 
1.4 
i *9 
Control I. 
0.25 
°-75 
1.25 
i -55 
Control II. 
0.2 
0.7 
1-15 
i -5 
The results are not strictly comparable with those obtained in the 
liquid cultures, since in this case agar is present, and both E. catemdata and 
E. viridescens are capable of growth and sporulation in agar alone, produc¬ 
ing scanty mycelium and small scattered spore masses. Since agar itself 
belongs to the group of carbohydrate substances it is possibly utilizable to 
different degrees according to the kind of sugar added to it, and especially if 
impurities are present in it. Thus both E. catemdata and E. viridescens 
exhibited poor growth in sucrose as compared with lactose in liquid cultures, 
but in the plate cultures the growth after four days in sucrose and lactose is 
nearly the same. Little comparative value is attached to the growth differ¬ 
ences exhibited in lactose, glucose, and sucrose respectively, since these 
