- 10 -- ; 
(b) Result of work done at Billings, Montana, 1924: 
An average day showing the influence of weather factors on 
grasshopper feeding: 
Time 
I Average : 
Average 
' Average : 
: Time 
: Average 
: Average 
Average 
No. feeding 
temp. 
Eel. humid. : 
No. feeding 
: t emp . 
'Eel. humid 
6:00-6:30 
: 71 
: 59 
: 77 
: 12: 00-12: 30 
179 
80 
38 
6:30-7:00 
: 190 
: 60 
68 : 
:12:30-l:00 
205 
80 
39 
7:00-7:30 
135 
62 
: 65 
: 1:00-1:30 . 
202 
: 81 
35 
7:30-0:00 
: 175 
: 63 ! 
64 : 
: 1:30-2:00 
171 
: 81 
35 
0:00-8:30 
: 179 
66 
58 : 
: 2:00-2:30 
181 
: 02 
33 
8:30-9:00 
207 
: 67 ! 
53 : 
: 2:30-3:00 
152 
04 
32 
9:C0-9:30 
247 
: 69 ! 
51 : 
: 3:00-3:30 
114 
: 04 
: 30 
9:30-10:00 
232 
: 72 
49 : 
: 3:30-4:00 
70 
: 04 
30 
10:00-10:30 i 
210 . 
73 
45 : 
: 4:00-4:30 
: 61 
: 01 : 
32 
10:30-11:00 
250 
75 
41 : 
: 4:30-5:00 
46 
: 02 
: 32 
11:C0-11:30 ; 
339 
77 
41 : 
: 5:00-5:30 
26 
: 01 
: 31 
11:30-13:00 i 
291 : 
79 : 
37 : 
: 5:30-6:00 
9 
: 02 
38 
(c) Result of work done at Havre, Montana, 1924: 
An average day showing the influence of weather factors on 
grasshopper feeding: 
Hour 
Aver. : 
Aver. 
: Aver. 
Aver. : 
: Hour 
Aver. 
• Aver. 
Aver. : 
Aver. 
. No. feeding 
temp. 
humid 
bar. P. : 
No.f eedin. 
s;:temp. 
humid. : 
bar. P. 
6-7 
19 
! 56.6 
59.0 i 
27.25 : 
: 12-1 
26 
72.3 • 
42.7 : 
27.21 
7-0 
75 
' 60.5 
: 64.1 
: 27.25 : 
: 1-2 
23 
: 72.0 
41.3 : 
27.19 
0-9 
: 123 
: 54.5 
: 57.0 
27.24 : 
: 2-3 
: 20 
: 74.5 
41.0 : 
27.17 
9-10 
67 
60.1 
51.1 
27.25 : 
: 3-4 ! 
• 17 
75.4 
39.1 : 
27.18 
10-11 
104 
69.9 . 
49.5 
• 27.22 : 
: 4-5 
24 
75.0 
. 36.5 : 
27.19 
11-12 
31 
72,1 
46.7 
' 27.21 : 
: 5-5 
15 
: 74.9 
41.0 : 
27.19 
(d) Result of work done at Cut Bank, Montana, 1924: 
An average day showing the influence of weather factors 
on grasshopper feeding. The average temperature here 
differs from the temperatures previously given in that it 
was taken at crop height, at two feet above ground. 
Hour : 
Average : 
Aver. : 
Aver. 
Aver. : 
: Hour 
Average : 
Aver. 
Aver. 
Aver. 
No.f ceding. 
temp. : 
humid 
: bar. P. : 
No.f eeding" 
temp. 
humid. 
bar. P. 
6-7 
3 
47.3 : 
92.3 
26.18 : 
: 12-1 
85 
72.7 
! 45.9 
: 26.18 
7-6 
51 
: 55.8 : 
80.4 
26.34 : 
: 1-2 
50 : 
73.6 
: 45.4 
26.15 
0-9 
: 130 
60.9 : 
71.5 
: 26.33 : 
: 2-3 
73 
73.0 
47.6 
26.34 
9-10 
163 
: 67.0 : 
62.1 
: 26.27 : 
: 3-4 
: 106 
73.0 
51.0 : 
! 26.34 
10-11 
: 177 
: 69.6 : 
51.5 
: 26.21 : 
: 4-5 
77 
: 70.5 
46.1 
: 26.21 
11-12 
: 98 
71.9 : 
43.9 
: 26.19 : 
: 5-6 
63 
70.6 
39.6 
26.17 
Note: A clear sky with little or no wind' seems to form the 
ideal condition for grasshopper feeding so far as these two factors are concerned. 
The hoppers will quit feeding during a stiff wind or cloudy weather unless forced 
by hunger to eat. ■ > 
***************************** 
