384 



NEW YORK STATE MUSEUM 



Some writers have recommended the simple sprinkling of the liquid 

 over the surface of the grain. 



For use in large quantity it might be desirable to order the carbon 

 bisulphide of Edward R. Taylor, Cleveland, Ohio, manufacturer of 

 "fuma" carbon bisulphide, at the following advertised prices: In 

 10-pound cans, 12 cents per pound; in 30-pound cans, 11 cents per 

 pound; in 50-pound cans, 10 cents per pound. So long as any of the 

 vapor remains, no light or fire of any kind should be brought near it, 

 as the vapor is very explosive. It has been known to ignite even from 

 the heat of a hot-air register. 



As the insect is often local in its occurrence, — in consideration of the 

 fact that it passes the winter in granaries in a continued succession of 

 broods, where the temperature is moderate, it would not be difficult to 

 destroy the insect and arrest the continuation of the broods, through 

 concert of action in any one locality. If all the grain holders would 

 unite in disinfecting their granaries and storehouses by the use of the 

 carbon bisulphide in the early summer, there would be no moths to 

 leave them for the deposit of eggs upon the ripe grain in the fields, 

 and consequently future attacks would be prevented until the insect 

 could again be introduced from some other locality. 



It is stated that corn can be kept for years nearly exempt from 

 injury by this insect and the grain-weevils, by being housed in the 

 shuck or husk: it has been thus kept through the third year. Mr. 

 Ruffin has also stated: " If wheat be threshed and well-fanned early 

 in July [in the South] there will be no weevils worthy of notice. The 

 eggs previously laid do not exist on the grains, but on the chaff or 

 shuck, in which they are inclosed, and upon hatching, the maggots 

 must perish for want of food. As in the case of corn, the wheat is not 

 exposed to subsequent layings except on the grain at the surface of 

 the bulk." 



But evidently the best reliance is to be placed upon the destruction 

 of the egg-bearing moths in the granaries in the early summer before 

 harvest. 



The Angoumois Moth Destroyed by a Mite. 



Several years ago (October 1, 1889) a sample of infested wheat was 

 sent to me by a correspondent at Charlottesville, Va. Statement of 

 the nature of the attack may be of interest in connection with its 

 unusual termination. The gentleman wrote: 



Wheat harvest in our section was followed by continuous rains 

 which resulted in serious sprouting in the shuck. As soon as possible 

 I hauled up and threshed, storing the wheat in a large barn, spreading 



