6 BULLETIN 186, U. S. DEPARTMENT OF AGEICLTLTURE. 



SUMMARY. 



Fumigation by the method described in this bulletin was found to 

 kill insects without injury to the seed and with a considerably shorter 

 exposure than is necessary in the usual method of seed- fumigation. 

 Further experiments will be conducted with special reference to the 

 use of carbon bisulphid, which is not considered in this paper. 



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