ASCOSPORE EXPULSION OF ENDOTHIA PARASITICA 
435 
Table IV 
Ascospore Trap Tests ^ Records for West Chester, Pa., Spring and Summer, IQ14 
Rainfall 
Temperature 
Percentage of 
Traps Showing 
Amount, Inches 
Min. 
Expulsion 
May 5 
8 
0.71 
65 
59 
T T 8 
11.0 
0.21 
58 
52 
traces 
" 12 
0.56 
72 
45 
" 27 
0.19 
92 
65 
3 
June 4 
0.30 
70 
61.5 
9.2 
" 14-15 
0.08 
75.5 
58 
0 
" 21-22 
1.08 
80 
48 
26.1 
" 27 
0.68 
86 
60 
29.2 
July 2 
1. 15 
82 
64 
24.6 
5 
0.35 
73 
61 
34-3 
" 7 
0.70 
70 
59 
31. 1 
" 13-15 
3-14 
85 
66 
36.6 
" 16 
0.25 
83 
69 
40 
" 25 
0.31 
16.6 
" 28 
3.58 
33.3 
Table V 
Summary of Number of Rain Periods and Number of Times Spores Were Expelled 
Period 
No. of 
Rain Periods 
Amount of 
Rain in Inches 
No. of Rains 
During Which 
Expulsion Occurred 
Nov. 26, 1912-Mar. 19, 1913 
19 
12.125 
0 
Mar. 20, 1913-N0V, 15, 1913 
42 
30.01 
39 
Nov. 16, 1913-May 4, 1914 
18 
11.64 
0 
May 5, 1914-July 31, 1914 
15 
13.04 
14 
Table VI 
Records for Ascospore Traps, Mar tic Forge, Pa., Winter of 1Q12-13 
Date 
Amount, Inches 
Temperature 
Min. 
Jan. 29 
" 31 
Feb. 4 
" 10 
" 17 
" 22 
27 
Mar. 5 
" 10 
" 13 
" 14 
.06 
.70 
•03 
.04 
.09 
.36 
.02 
.55 
.10 
1.29 
38 
62 
37 
32 
35 
56 
58 
45 
52 
55 
67 
31 
42 
28 
18 
29 
49 
38 
31 
41 
53 
53 
