186 INSECTS AFFECTING THE BEAN. 



Remedies. — Beans infested by these pests should 

 be inclosed in tight vessels, into which a little bisul- 

 phide of carbon, benzine, or gasoline has been placed. 

 The fumes of these volatile substances will destroy 

 the beetles. Of course care must be taken that no 

 particle of fire comes in the vicinity of the treatment. 

 Late planting of the crop has been found a good way 

 to prevent injury by an extensive Illinois farmer 

 living in the latitude of St. Louis, Missouri, who, for 

 a number of years, has planted his field beans from 

 June 20th to July 10th, with good results. . If the 

 beans, as soon as ripe, are heated to 145° Fahrenheit, 

 the partially grown larvae will be destroyed without 

 injury to the germinating qualities of the seed. 

 This will prevent much of the damage that would 

 be done were the larvae left to complete their growth. 



The Pea Weevil. 



Bruchus pi si. 

 As already stated, this insect is very similar to the 

 Bean Weevil in life-history and habits. The adult 

 beetle deposits its yellow eggs on the outside of the 

 young pods early in summer. On hatching, a few 

 days later, the larvae bore through the pods into the 

 peas, which they enter and eat out the substance, 

 leaving the radicle or germ untouched. On this 

 account " buggy peas " will germinate, but as the 

 young plants are deprived of the proper nourishment 

 they make a less healthy growth than do those re- 

 sulting from uninjured peas. When full grown the 



