RELATION BETWEEN VEGETATIVE VIGOR AND REPRODUCTION 549 
where duplicate pieces of mycelium placed under identical conditions 
give similar results, such results may be assumed to correctly repre- 
sent the response of the plant to these conditions. In Tables VIII 
and IX a number of figures are given to show that counts at right 
angles to each other agree substantially and that the counts from dupli- 
cate dishes also agree pretty closely. While the duplicate dishes were 
not always counted, because of the great amount of labor involved in 
this work, they were always examined and when the number of 
oogonia was strikingly different from that in the dish counted this 
fact was noted. In all other cases the oogonia were either counted 
or the fact noted that the two dishes were in substantial agreement. 
No oogonia were counted that did not contain oospores. Table VIII 
has been compiled from the record of Series III transferred November 
19, 1914. In no case is there a great difference between the counts 
at right angles to each other, and only in numbers 6, 7 and 12 is there 
any considerable difference between the number of oogonia in the two 
dishes of a set. Such a difference was often due to contamination of 
one dish by bacteria, but whatever the cause, whenever there was as 
great a variation as is shown by numbers 6, 7 and 12, the highest 
average was used in the final tables. 
Table VIII 
5. ferax. Mycelia Out of Media Given Under Column 2. Transferred to 0.075 P^^- 
cent Haemoglobin. All Sugars in the Culture Media 1/50 Molecular. 
Temperature i6°-i8° C. All Figures Given to the Nearest 
Whole Number 
I ■ 
2 
First Dish 
Second Dish 
9 
3 
4 
5 
6 
7 
8 
From Medium 
First 
Count 
Cross 
Count 
Aver- 
age 
First 
Count 
Cross 
Count 
Aver- 
age 
Aver- 
age 
of All 
I 
Pea 
42 
42 
42 
49 
49 
46 
2 
Peptone 0.1% 
19 
19 
23 
23 
21 
3 
49 
44 
47 
45 
45 
46 
4 
Peptone 0.5% 
54 
41 
47 
27 
31 
29 
38 
5 
Peptone 1% 
41 
39 
40 
43 
43 
41 
6 
Peptone 0.1% + sucrose 
25 
34 
29 
II 
15 
13 
21 
7 
Peptone 0.1% + maltose 
65 
65 
65 
25 
28 
27 
46 
8 
Peptone 0.1% + dextrose 
29 
28 
29 
28 
28 
28 
9 
Peptone 0.1% -f levulose 
79 
67 
73 
76 
76 
74 
10 
19 
26 
22 
36 
32 
34 
28 
II 
Peptone 0.2% -f- maltose 
46 
46 
46 
40 
8 
40 
43 
12 
.23 
25 
24 
13 
II 
17 
13 
Peptone 0.2% -j- levulose 
33 
29 
31 
55 
55 
43 
20 
23 
22 
23 
21 
21 
22 
