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



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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