INSECTS. 



145 



Aa^ 





be repeated as soon as new 

 moths appear. The bisul- 

 phide of carbon is very in- 

 flammable, as well as 

 poisonous, so great care 

 should be taken not to ex- 

 pose a fire to the fumes. 

 Being heavier than air, the 

 fumes will sink down 

 through a pile of corn. 

 The fumes of this gas would 

 also destroy other insects 

 injurious to stored grain, 

 including the grain or barn 

 weevil, and the grain Syl- 

 vanus, both of which are 

 common in the South. Ac- 

 cording to Webster the 

 worms are destroyed at a 

 temperature of 120 deg. 

 F., for four hours, so if 

 means can be obtained by 

 which to heat the ears to 

 this degree a very desir- 

 able thing will be accom- 

 plished. 



Other Insects.— While 

 there are numerous other 

 insects which injure corn, 

 they do 'it to so small an 



10 



