STUDIES OF THE PINK BOLLWORM IN MEXICO 53 
Table 44. — Results of treatment of cottonseed in live-steam disinfecting 
machine — Continued 
SERIES 2 
[Speed of machine, 50 revolutions per minute. Time of exposure, 55 seconds. Steam admitted into two 
upper conveyors only] 
Test 
No. 
Number 
of larvae 
in tests 
Seed tempera- 
ture on 
discharge 
Larvae 
killed 
Test 
No. 
Number ; Seed tempera- 
of larvae { ture on 
in tests discharge 
Larvae 
killed 
52 
51 
50 
121 
127 
117 
49 
128 
118 
57 
56 
129 
103 
115 
56 
39 
22 
36 
89 
28 
33 
109 
118 
26 
°F. 
138 
138 -138 
141 -138 
138K 
139 
141 
149 -141 
141M 
142 
143 -142 
145 -143 
144 -152 
Per cent 
100 
100 
100 
94.8 
100 
100 
100 
100 
100 
99 
100 
100 
55 
53 
123 
120 
54 
125 
124 
122 
126 
119 
130 
131 
°F. 
141 146 -145 
98 145 -147 
44 145^-148 
40 146 
84 147 -146 
43 146^-147 
32 148 -1463^ 
27 147 
32 147 -147 
22 149J4 
24 152 -152H 
27 152^-152 
1 
Per cent 
100 
100 
100 
100 
100 
100 
100 
100 
100 
100 
100 
100 
SERIES 3 
[Speed of machine, 55 to 56 revolutions per minute. Time of exposure, 49 seconds. Steam admitted into 
two upper conveyors only] 
106 
46 
105 
73 
104 
101 
102 
61 
103 
61 
116 
44 
115 
82 
110 
43 
°F. 
140 
141 -140 
146 -141 
145 
149 -146 
148 -150 
152 -148 
149 -150 
Per cent 
100 
109 
32 
100 
108 
57 
99 
111 
48 
100 
114 
50 
100 
113 
24 
100 
107 
57 
96.3 
112 
43 
100 
101 
57 
o K 
Per cent 
152 -149 
100 
150 
100 
150 -155 
100 
151JS-152 
100 
153 -151H 
100 
152 
100 
155 -153 
100 
154 
100 
SERIES 4 
[Speed of machine, 60 revolutions per minute. Time of exposure, 47 seconds. Steam admitted into two 
upper conveyors only] 
58 
1 
143 1 
98 
91 
99 
57 
100 
61 
62 
108 
73 
62 
72 
85 
85 
45 
86 
32 
71 
94 
82 
33 
81 
36 
59 
111 
88 
21 
80 
29 
60 
75 
61 
57 
97 
67 
70 
76 
87 
53 
89 
29 
96 
30 
°F. 
Per cent 
136 -140 
100 
90 
52 
138 
90.9 
92 
42 
138 -1403^ 
94.7 
95 
41 
1403^-138 
100 
84 
42 
141 -138 
87.9 
83 
28 
138 -142 
100 
69 
89 
143 -138 
98.8 
91 
49 
145 -138 
91 
64 
33 
138 -146 
84.3 
63 
34 
142 -139 
98.9 
93 
33 
139 -147 
100 
94 
50 
149 -139 
97.1 
65 
68 
140 -141 
94.5 
68 
49 
140H 
95.2 
66 
46 
140 -149 
100 
■ 67 
60 
141 -142 
100 
75 
82 
142 -141 
98.2 
74 
83 
142 
100 
78 
47 
144 -142 
97.3 
77 
60 
146 -142 
98.1 
76 
70 
1423/6 
100 
79 
30 
143^-143 
100 
°F. 
Per cent 
143 -145 
100 
146 -1433^ 
100 
149 -1433/3 
100 
144 -145 
97.6 
147 -144 
100 
149 -144 
100 
145 -146 
100 
145 -146 
100 
149 -145 
100 
1453^ 
100 
146 
100 
146 -149 
100 
149 -149 
100 
149 -150 
100 
150 -149 
100 
152 -153J4 
100 
155^-152 
100 
153 -154 
100 
155 -153 
100 
1533^-155 
100 
154 
100 
SERIES 5 
[Speed of machine, 40 revolutions per minute. Time of exposure, 1 1 minute 8 seconds. 
into two lower conveyors only] 
Steam admitted 
°F. 
Per cent 
°F. 
Per cent 
138 
27 
137 
81.4 
141 
76 
144 
84.2 
135 
22 
138 
100 
134 
20 
154 
100 
139 
30 
138-142 
93.9 
136 
28 
160 
96.4 
142 
59 
139 
89.8 
132 
33 
162 
100 
137 
36 
140 
100 
133 
37 
166 
100 
140 
64 
142-147H 
73.4 
1 Actual exposure is only about 46 seconds on account of no steam reaching the seed 
until it entered the second section of conveyor. 
