42 
FUMIGATION FOR THE CITRUS WHITE FLY. 
Table IV. — Summary of dosagt experiments uith sheet tent constructed of S-ounce duck. 
Measurements of 
Amount of 
tented tree. 
cyanid 
recom- 
Experi- 
ment No. 
Amount of 
Per cent of 
mended in 
cyanid 
white flies 
table friven 
Distance 
( in- n infer- 
used. 
destroyed. 
in appen- 
over. 
ence. 
dix; 45 
minutes' 
exposure. 
Feet. 
Feet. 
Ounces. 
Ounces. 
20.1 
45 
57 
16* 
91.9 
-• 
30. 1 
50 
60 
7 
31 
35} 
30.2 
44 
584 
11 
66 
28 
30.4 
47 
62" 
18 
92 
33 
30.5 
39 
50 
16* 
98.6 
20 
30.6 
46 
56 
20 
71 
29 
30.7 
40* 
56 
30 
100 
24 
30.8 
38 
48 
251 
100 
18* 
40.1 
44 
53 
5 
31 
254 
40.2 
m 
59 
10 
84 
26 
40.3 
42\ 
60 
15 
85 
27 
40.4 
45 
56 
21 
80 
28* 
40.6 
39 
54 
17* 
88 
21 
40.8 
444 
58* 
17J 
97 
29* 
40.9 
431 
56 
12 
93 
27 
40.10 
38 
46 
134 
95.7 
17* 
40.11 
45* 
63 
25" 
99.2 
32* 
40.12 
51* 
64 
30§ 
98.4 
41* 
40.13 
444 
57 
24 
100 
28 
40.14 
43* 
54 
26 i 
100 
26 
40.15 
37" 
48 
21 
100 
18 
40.18 
43 
54 
32 
100 
25 
40.20 
43 
60 
32 
100 
27 
40.21 
474. 
56 
38 
100 
31 
45.1 
37 
47 
21 
100 
17* 
45.3 
47 
51* 
22 
99.5 
28 
45.4 
45 
57* 
23 
100 
28 
45.5 
464 
604 
26* 
98.9 
32 
45.6 
43* 
56" 
22* 
100 
26* 
4.'). 7 
50* 
56 
36 
100 
34 
45.8 
44i 
58 
27 
100 
28 
45.9 
364 
48 
21 
100 
17 
45.10 
45* 
67 
35 
100 
34 
45.12 
344 
43 
15| 
100 
14 
45.13 
314 
38 
in 
100 
11* 
45.15 
404 
50 
26i 
+99. 6(?) 
21 
45. 17 
37" 
45 
21 
100 
164 
45.19 
314 
39 
14} 
100 
Hi 
45. 20 
33 
50 
12* 
99.5 
15 
45.21 
31 
42 
9 
89.3 
11 
45.22 
38 
46 
13f 
99.8 
IS 
45.23 
464 
56 
294 
100 
294 
45.24 
34| 
47 
154 
100 
15 
45.25 
484 
57 
334 
100 
32 
45.26 
33 
46 
13" 
100 
14 
45.27 
464 
65 
364 
+99. 7(?) 
34 
45.28 
46* 
50 
244 
99.5 
- 
45.30 
294 
30 
6" 
100 
9* 
45.33 
:^V. 
36 
10 
100 
14 
45.34 
40* 
44 
21 
100 
194 
45.35 
40* 
47 
20 
100 
194 
45.36 
45 
50 
204 
97.7 
25" 
45.37 
35 
50 
19j 
92 
16* i 
50.1 
44 
58 
23 
66 
28 
50.2 
394 
46* 
28 
100 
19 
50.5 
52" 
56 
37 
100 
354 
60.1 
51 
60* 
30* 
98.6 
38 
60.2 
43 
56 
22 
100 
26* 
60.4 
44* 
58 
234 
100 
29 
60.5 
384 
50 
16* 
100 
20 
60.6 
33* 
38 
8* 
97 
13 
60.7 
38* 
56 
18 
94 
22" 
60.19 
41* 
584 
27 
100 
26* 
60.20 
29 
374 
8* 
66 
L0 
60.21 
41 
55" 
25 
97.6 
24 
X.l 
43* 
56 
-_ 
? 
26* 
X.3 
47| 
54 
>. 
99.6 
30 
X. 4 
34 
49 
15 
99.8 
l.V. 
x .:. 
47* 
54 
24* 
99.7 
30 
X 6 
45* 
53 
171 
98.8 
27* 
X.7 
49 
62 
40 
«99.8 
37 
X .8 
524 
64 
35* 
f'94 
42 
a One pupa apparently alive 24 days after fumieatint:: 7:n dead. 
'- 200 examined : 188killed, 12 alive. 
