Jan. 17, 1916 
Plenodomus fuscomaculcms 
755 
The following experiment (see Table XXVII), which was performed as 
part of the experiment given on page 741, gives the effect of change of 
concentration upon the mycelium. The experiment was made with com 
broth and with synthetic solution. The transfer was made after three 
weeks’ growth had taken place. 
Table XXVII .—Effect of change of intensity of a factor: Change of concentration of 
food supply 
CORN BROTH 
Extent of change. 
Number of 
pycnidia. 
Growth 
increment. 
fioX. 
2 
2 5 
25 
25-40 
(a) 
M- + 
+ 
4 * 
+ 
1 c-V 
FromioX to{ JQ* * 
(1/10X. 
f 10X. 
1 fY 
From 5 X to^J 0 
2-25 
++ 
11/10X ■ * -... 
fioX. 
So 
4-9 
0 
12—I c 
++■ 
++ 
+++ 
+ 
« ... Ux. 
From 1X to<( J 0 
[1/10X. 
fioX. 
„ , ... kx. 
0-3 
0 
++ 
++ 
From 1/10X to-{J 0 
[1/10X. 
SYNTHETIC SOLUTION 
fix.. 
FromioXtoiKX. 
U/ 5 X 
From 5 X to 
* 5 X.. 
ioX- • 
2 X - • * 
iX... 
XX.. 
I/ 5 X. 
1/10X 
From 1X to 
10X ■. 
5 X... 
2X. •• 
i/ 5 X. 
1/10X 
'SX... 
From i/sX to^iX-.. 
1/10X 
fax.. 
Fromi/ioXtoj^,* 
li/SX 
0 
+++ 
100 
++ 
20 
+ 
0 
++++ 
0 
++++ 
0 
++> 
100 
+++ 
50 
++ 
50 
++ 
25 
+ 
0 
+++++ 
0 
++++ 
0 
++++ 
15 
+ 
12 
+ 
0 
++ 
100 
+++ 
0 
+ 
0 
+++ 
100 
++ 
50 
++++ 
50 
+ 
a These transfers were not made. 
& Many immature. 
