May i6,1921 Glucose as a Source of Cdrbon for Storage-Rot Fungi 193 
in the corresponding series of different experiments. The 10 per cent 
solutions by weight showed a range of from 9.1 per cent to 9.7 per cent 
at the termination of the experiments, while those made up to contain 
20 per cent tested from 18.2 per cent to 19.5 per cent, and so on, as indi¬ 
cated in the control columns in each series and under each organism. 
Table I.— Percentage of glucose remaining in the solutions at the end of the experiment a 
[Saccharimeter readings] 
Series No. 
Percentage of glu¬ 
cose by weight. 
Solutions. 
Fusarium acumi¬ 
natum. 
Diplodia tubericola. 
Rhizopus tritici. 
Mucor racemosus. 
Sclerotium batati- 
cola. 
Penicillium sp. 
Botrytis cinerea. 
Sphaeronema fim- 
briatum. 
T 
/ Control. ... 
O 
O 
O 
O 
O 
O 
O 
O 
1 
O 
\ Inoculated. 
O 
O 
O 
O 
O 
O 
O 
O 
TT 
f Control.... 
9 - 7 
9.4 
9 - 5 
9.4 
9.6 
9. 26 
9-3 
9. I 
11 
IO 
\ Inoculated. 
8. 55 
I. 2 
8-3 
5-2 
2 . 2 
3. 16 
8. 83 
9. I 
TTT 
/ Control.... 
18. 85 
18.5 
19- 35 
i 9 - 5 
18- 95 
18.6 
18- 75 
l 8 . 2 
111 
20 
\ Inoculated. 
17.9 
14 . 7 
17.71 
is-8 
14. l 6 
15- 53 
17. 7 
l 8 . 2 
TTr 
| Control.... 
28 
26.8 
29. 2 
28. 7 
27. 8 
28. I 
28. s 
2 5 - 5 
1 V 
3 ° 
\ Inoculated. 
27. 1 
23-3 
27. 2 
26 
25-4 
23. 46 
26. 03 
25-5 
\T 
/Control. ... 
37 -1 
38 
39 * 7 
38.1 
37-3 
37-5 
37-8 
37 
V 
40 
\ Inoculated. 
36. 7 
37-3 
36.8 
36-9 
36- 7 
32. 86 
37 - 8 
ITT 
/Control.... 
46.1 
48 
49.2 
47.8 
45-5 
46.9 
47-7 
V1 
5 ° 
/Inoculated. 
46.8 
48.3 
46.7 
48. 1 
45 - 7 
44. 86 
VTT 
/Control.... 
57-5 
57-3 
36.4 
58.8 
57 - 1 
57-9 
V 1 JL 
1 Inoculated 
57 
a Column 2 shows the percentage of glucose by weight, while the actual percentage of sugar present at 
the end of the experiments in each case is indicated by the saccharimeter readings given in the control 
columns. The significance of column 2 is the same in all the following tables. 
For the sake of convenience in some of the general discussions reference will be made to the approxi¬ 
mate percentages as shown in column 2 instead of to the actual percentage based on the saccharimeter 
readings. 
The column headed “inoculated” represents the average of the con¬ 
centrations of the three inoculated flasks of each series at the end of the 
experiment. For example, in series II of the Fusarium acuminatum 
experiment the control tested 9.7 per cent, while the average of the three 
inoculated flasks is 8.55 per cent. The control in the Diplodia experi¬ 
ment of series II tested 9.4 per cent, while the inoculated flasks averaged 
1.2 per cent of glucose. Similarly the amount of glucose in the controls 
and in the flasks in which the organisms have grown may be contrasted 
with all of those in the same series in all the experiments. 
The results show that all these fungi have the power to germinate and 
grow in a solution of glucose of high osmotic concentration. As early as 
1889 Eschenhagen (7) showed that Aspergillus niger f Penicillium glaucum , 
and Botryiis cinerea Pers. could grow in solutions of glucose of 53, 55, and 
51 per cent strength, respectively, and Raciborski (27) found that A. 
glaucum and a species of Torula could grow in a salt solution of even 
greater concentration. Hawkins ( 16) likewise showed that various species 
