﻿STUDIES OF THE PINK BOLLWOEM 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 

 of larvae 

 in tests 



Seed tempera- 

 ture on 

 discharge 



Larvae 

 kiUed 







°F. 



Per cent 







°F. 



Per cent 



52 



103 



138 



100 



55 



141 



146 -145 



100 



51 



115 



138 -138 



100 



53 



98 



145 -147 



100 



50 



56 



141 -138 



100 



123 



44 



145^-148 



100 



121 



39 



1383^ 



94.8 



120 



40 



146 



100 



127 



22 



139 



100 



54 



84 



147 -146 



100 



117 



36 



141 



100 



125 



43 



1461^147 



100 



49 



89 



149 -141 



100 



124 



32 



148 -1461^ 



100 



128 



28 



141J^ 



100 



122 



27 



147 



100 



118 



33 



142 



100 



126 



32 



147 -147 



100 



57 



109 



143 -142 



99 



119 



22 



irn/i 



100 



56 



118 



145 -143 



100 



130 



24 



152 -1523^ 



100 



129 



26 



144 -152 



100 



131 



27 



1523^152 



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. 



141 

 146 



149 

 148 



152 

 149 



140 

 -140 

 -141 



145 

 -146 

 -150 

 -148 

 -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 



°F. 



Per cent 



152 -149 



100 



150 



100 



150 -155 



100 



1511/^-152 



100 



153 -151^ 



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 



143 



98 



91 



99 



57 



100 



61 



62 



108 



73 



62 



72 



85 



85 



45 



86 



32 1 



71 



94 '■ 



82 



33 



81 



36 



69 



111 , 



88 



21 I 



80 



29 1 



60 



75 



61 



57 



97 



67 



70 



76 



87 



S3 



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 



1403^ 



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 



70 



70 



142}^ 



100 



79 



30 



1433^143 



100 







°F. 



Per cent 



143 -145 



100 



146 -1433^ 



100 



149 -1433^ 



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 -153H 



100 



1553^-152 



100 



153 -154 



100 



155 -1.53 



100 



1533^155 



100 



154 



100 



SERIES 5 



[Speed of machine, 40 revolutions per minute. Time of exposure,' 1 minute 8 seconds. Steam admitted 



into two lower conveyors only] 







"F. 



Percent 







"F. 



Per cent 



138 



27 



137 



81.4 



141 



76 



144 



84.2 



135 



22 



138 



100 



134 



20 



154 



100 



139 



30 



1.38-142 



93.9 



136 



28 



160 



90.4 



142 



59 



139 



89.8 



132 



33 



162 



100 



137 



30 



140 



100 



133 



37 



lOfi 



100 



140 



64 



H2-liTA 



73.4 











> Actual exposure Is only about 46 sccond.s on account of no steam reaching the seed 

 until it entered the second section of conveyor. 



