276 
Journal of Agricultural Research 
Vol. X^V, No. 6 
Table I.— Summary of measurements of conidia from coconut and cacao 
Class (in microns). 
Number of coconut 
conidia in each class 
according to — 
Number of cacao 
conidia in each class 
according to— 
Length. 
Width. 
Length. 
Width. 
9.5 to 11.49. 
O 
O 
0 
0 
II. 5 to 13.49. 
O 
0 
O 
I 
13.5 to 15.49. 
O 
I 
O 
1 
15.5 to 17.49. 
O 
3 
O 
4 
17.5 to 19.49. 
O 
3 
O 
4 
19.5 to 21.49. 
3 
6 
2 
8 
21.5 to 23.49. 
O 
12 
3 
5 
2 3-5 to 2 5-49 . 
2 
12 
2 
23 
25.5 to 27.49. 
3 
37 
7 
41 
27.5 to 29.49. 
2 
32 
4 
3 o 
29.5 t° 3 i .49 . 
3 
64 
6 
73 
31.5 to 33.49. 
13 
116 
12 
“3 
33-5 to 35-49 . 
5 
43 
5 
37 
35-5 to 37.49. 
2 
27 
5 
30 
37-5 to 39-49 . 
14 
39 
*7 
27 
39.5 to 41.49.. 
13 
1 
4 
3 
41.5 to 43.49. 
i 5 
2 
10 
0 
43-5 to 45-49 . 
24 
2 
29 
0 
45-5 to 47.49. 
16 
0 
11 
0 
47.5 to 49.49. 
24 
0 
*7 
0 
49.5 to 51.49.... 
46 
0 
40 
0 
51.5 to 53.49. 
39 
0 
36 
0 
53-5 to 55.49. 
26 
0 
27 
0 
55-5 to 57.49. 
36 
0 
40 
0 
57-5 to 59.49. 
14 
0 
16 
0 
59.5 to 61.49. 
29 
0 
21 
0 
61.5 to 63.49. 
30 
0 
30 
0 
6 3-5 to 65.49. 
10 
0 
12 
0 
65.5 to 67.49. 
7 
0 
12 
0 
67.5 to 69.49. 
16 
0 
13 
0 
69.5 to 71.49. 
3 
0 
5 
0 
71.5 to 73.49. 
3 
0 
3 
0 
73-5 to 75.49. 
5 
0 
7 
0 
75.5 to 77.49. 
0 
0 
0 
0 
77-5 to 79-49 . 
2 
0 
1 
0 
79.5 to 81.49. 
3 
0 
1 
0 
81.5 to 83.49. 
2 
0 
0 
0 
83.5 to 85.49. 
0 
0 
0 
0 
85.5 to 87.49. 
0 
0 
1 
0 
87.5 to 89.49.. 
0 
0 
1 
0 
89.5 to 91.49. 
0 
0 
0 
0 
Total. 
400 
400 
400 
400 
From Table I it can be readily seen that for the coconut strain the 
conidia varied in length from 19.5 to 83.49 /a and in width from 13.5 to 
45.49 jx. In length the majority of the spores fell into the classes between 
37.5 and 63.49 ju, the average length being 52.27 /a. In width the majority 
fell into classes between 19.5 and 39.49 jx, the average width being 31.28 /x. 
These measurements made in May, 1922, on oatmeal agar show a greater 
range than the measurements made in 1919 on corn-meal cultures and 
reported by the writer (7). The average length and width, however, 
remained approximately the same. 
