Fusariiim in Tuber Rot and Wilt of Potato 
37 
sent the percentage of decrease in dry weight of material. The 
last weighing in these cases unavoidably included the dry weight 
of fungus material formed, so that the figures are higher than they 
ought to be. The differences in weight in these cases give only com- 
parative values of the amounts of material respired by the organ- 
isms. The filter paper used was the best Swedish paper, and the 
cork was obtained by skinning steamed potatoes, scrubbing 1]^e skin 
thoroughly, boiling it for 48 hours in distilled water, extract- 
ing for 48 hours in ether, and then boiling again with water. All 
figures represent averages, the composition of these figures being 
shown in tables \l and In many cases there was a fair coin- 
cidence of the values, while in others a great disparity appeared. 
The averages probably would more nearly approximate the true 
value if a greater number of figures were available. 
TABLE V 
Dry weight (in milligrams) formed in 6 and 12 days by Fusarium tricho- 
thecioides AND F. oxysporum 
Fusarium trichctkecioides 
^ Fusarium oxysporum 
Number of days 
Number of days 
6 
12 
6 
12 
Ethvl alcohol 1 
1.2 
15.0 
18.5 
Glycerine 
12.0 
20.5 
17.0 
92.0 
Mannit 
108.5 
136.3 
109.5 
112.0 
Arabinose 
5.2 
35.0 
78.7 
43.0 
Glucose 
11.5 
42.3 
43.5 
44.0 
Mannose 
2.0 
52.0 
49.0 
62.0 
Galactose 
28.8 
43.3 
39.0 
73.0 
Fructose 
56.5 
81.0 
74.5 
77.6 
Saccharose 
9.5 
45.6 
36.5 
35.6 
Maltose 
13.0 
61.0 
35.5 
60.3 
Lactose 
1.3 
20.0 
4.0 
21.0 
Raffinose 
12.4 
47.3 
44.5 
54.6 
Potato starch 
45.0 per cent 
81.0 
103.0 
Wheat starch 
22.6 per cent 
42.1 per cent 
54.3 per cent 
127.0 
Corn starch 
19.7 per cent 
33.4 per cent 
37.9 per cent 
67.2 per cent 
Soluble starch 
45.2 per cent 
49.0 per cent 
110.5 
210.3 
Dextrine 
4.4 
37.3 
42.0 
56.3 
Inulin 
63.6 
123.0 
102.0 
90.0 
Gum arabic 
1.5 
18.6 
37.0 
58.3 
Gum tragacanth . . . 
67.5 per cent 
14.1 per cent 
27.1 per cent 
25.7 
Hemicellulose 
10.1 per cent 
7.3 per cent 
10.1 per cent 
6.7 per cent 
Cellulose 
4.0 per cent 
1.0 per cent 
4.25per cent 
6.7 per cent 
Cork 
10.1 per cent 
5.9 per cent 
12.8 per cent 
3.9 per cent 
No carbon source . . . 
0.5 
