374 
BOTANICAL GAZETTE 
3. Reese 
15 20 
11, Sterigmatocystis. 
25 
30 
Control 
curves; a, for first series; b, for 
second series. 
300 
ie 
pen Ve 
3 
\,, 
\ LS se 
id |S \ ee be 
Y 
d 
eS 
15 0 25 
124, Sterigmatocystis, first series. 
a,n/256 CuSO,; b, n/192 CuSO,; 
¢, n/32 HNO3; d, n/24 HNO. 
. [NOVEMBER 
200 
30 
ST 
no 
0 23 
12b, Sterigmatocystis, second 
series. a, 2/128 CuSO,; 6, 1/64 
CuSO,; ¢, 2/20 H,SO,; ¢@, 2/10 
H,SO,; e, n/20 HNO;; /, n/to 
HNO,. 
- The writer hopes by means of 
further experiments to be able to 
obtain additional information in re- 
gard to the meaning of the difference 
in action of the chemicals and the 
significance of the varying effects upon 
the different fungi. He wishes to 
acknowledge his indebtedness to Dr. 
B. M. Duccar, Professor of Botany 
in the University of Missouri, for 
suggesting the problem reported upon 
-in this paper and for valuable advice 
throughout the prosecution of the work, 
New HaMpsHIRE COLLEGE OF AGRICULTURE 
AND THE MECHANIC ARTS, 
Durhan, N. H. 
