£ 
l 
i 
2 
3 
4 
5 
6 
7 
8 
9 
io 
ii 
12 
13 
14 
15 
16 
17 
18 
19 
20 
21 
22 
23 
24 
25 
26 
27 
28 
29 
30 
31 
32 
33 
34 
35 
36 
37 
38 
39 
40 
41 
42 
43 
44 
45 
46 
47 
48 
49 
50 
51 
52 
S 3 
54 
55 
56 
57 
58 
59 
60 
61 
62 
63 
64 
65 
66 
Relation of Stomatal Movement to Infection 
1033 
XI .—Number of leafspots present on different leaves of varying maturity on one 
•beet plant in a medium-early field from June 24 to Sept . ig y 1913, at Rocky Ford , 
July. 
August. 
September. 
2 7 9 1012 14 16 21 23 25 28 30 
1 5 7 9 n 13 15 18 22 25 28 30 
1 3 6 8 10 13 15 17 19 
i 
> o 
300300 
350 350 
450 
140 140 
96 
46 
68 
70 
100 
100 
50 
95 
38 
220 220 
55 90 
160 165 
140 
300 
600 
600 
300 
600 
300 
600 
450 
480 
Soo 
480 
300 
350 
180 
400 
500 
230390 
450 500 
300320 
260320 
170245 
250,650 
440 
170 
400 
157 
240 
170 
6 
64 
8 
o 
o 
o 
800800 
750 750 
520 
450 550 
600 650 
600 600 
700'900 
QOO 
57 o\ 
55 oj 550 
400 j 500 
600600 
340450450 
40oj40oj40o 
250 290j290 
3004001500 
65o}65oj65oj65o 
500 550 550 650 
-’ — 550 
400 
400 
500 
450 
175 
300 
260 
85 
45 
34 
o 
o 
o 
350 i 350 
47,120 
220 300 
100 170 
500 
600 600 
200! 240 
3501580 
260 260 
300450 
650 ... 
900 900 
55o|6oo 
650 650 
400 
500 
450 
650 
750 
240 
580 
260 
140 
75 
70 
3 
ing the first half of the season infection did not take place in the 
and young leaves, but later, as in August, during a heavy attack 
fungus they became infected soon after they were large enough to 
ged. This might be explained by the fact that since many of the 
12535°—16 3 
