214 TENTH ANNUAL REPORT. 



generations of laryge each season, the nnmber varying with 

 the season and latitude. 



During the spring numerous complaints were received re- 

 garding the injuries of the bean-weevil {Bruchus oUectus), 

 which appear to have been unusually severe. The presence 

 of this insect is indicated by the small excavations which the 

 larv^ make in the beans similar to those shown in Fig. 16 c. 

 The fully developed weevil considerably magnified is repre- 

 sented at & of the same figure, its natural size being indicated 

 at a. In the field these weevils deposit eggs inside the 

 green pods in small clusters. In a short time the eggs hatch 

 into tiny grubs that feed within the beans, maturing in about 

 a month. These insects are also able to develop in dried 

 beans, so that when they are present in beans put away in 



autumn, many more may 

 be present the following 

 season. The best way of 

 preventing such a contin- 

 uance of their injury seems 

 to be to inclose the in- 

 fested beans in a tight ves- 

 sel in which a little bi- 

 sulphide of carbon, ben- 

 zine, or gasoline has been 

 placed. The fimies of 

 these volatile substances 



Fig. 16.-Tbe Bean-Weevil: a, natural wiU destroy the beetles, 

 size; 6, enlarged; c, beans from which Qf cOUrse Care must be 

 beetle has escaped. , , ,^ , n 



taken that no fire comes 

 in the vicinity of the treatment. 



In the bulletin on the Canker Worm (No. 44) attention was 

 called to the value of a substance called Eaupenleim as a sub- 

 stitute for printer's ink in banding orchard trees. Letters 

 received during the present year have shown that this substi- 

 tute has been used with a great saving of the expense involved 

 in the use of ink. The Eaupenleim has been used in large 

 quantities by the Gypsy Moth committee in Massachusetts. 

 During a recent conversation with these officials I learned 



