﻿STUDIES OF THE PINK BOLLWOEM IN MEXICO 57 



Table 47. — Absorption of moisture by seed treated in live-steam machine 





Steam 

 pres- 



Weight of seed- 







Time in 

 machine 



Before 



After 



Gain in 



weight 







treat- 

 ment 



treat- 

 ment 







M. sec. 



Pounds 



Pounds 



Pounds 



Pounds 



Per cent 



1 5 



50 



1,137 



1,172 



35 



3.08 



1 5 



50 



781 



814 



33 



4.2 



55 



55 



782.8 



804 



21.2 



2.7 



65 



70 



846.6 



861.2 



14.6 



1.7 



In the first tliree tests steam was admitted into two sections of the 

 conveyor, and in the last into only one. The temperatures recorded 

 in these tests ranged from 144 to 150° F. It appears from the results 



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s. 

































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^ 



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-^ 



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-^ 



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— — 











































* 











»« 



...., 



.... 



..... 



^« 



** 





,»- 













"* 



— — 



•'/V. 



s^/y 



r^s*^ 



"if^. 



•^Tiyy 



?i£- C 



^CPi 



-73% 



Z6-^ 



?/ye 





































.5" -#* ^ S" 7' <s & /c /■/ /£> /^ /^ y^ y<ff 



FiG. 13. — Cooling of seed treated with live steam and bulked immediately after treatment 



that the amount of moisture absorbed decreases when the time of 

 actual subjection to steam is reduced, even though the steam pressure 

 has to be increased to give sufficient heat. 



PRACTICAL USE OF DISINFECTING MACHINES 



Under the State regulations, disinfecting machines were installed 

 at all the gins during 1922 in all of the regulated zones in Texas. 

 Twenty-three of these machines were of the dry-heat typo and 14 

 of the live-steam type. Altogether about 23,000 tons of seed were 

 treated. There were no interruptions and machines were found to 

 be entirely practicable. 



Dry-heat machines costing about $500 each had a capacity in the 

 larger size as high as 10 bushels per minute. Three horsepower was 

 required to operate this machine. The expense of operation ranged 

 from 10 to 25 cents per ton of seed. 



