I052 



Rural School Leaflet 



The tent caterpillars bej:^n to spin cocoons during the latter part of 

 June. One school reported that last year 8,000 of these cocoons were 

 destroyed. Now, it is quite probable that in doing this a large number 

 of the beneficial parasites were killed. Professor Herrick, who prepares 

 the insect work for the teachers' leaflet, has suggested that after the 

 cocoons arc collected they be kept in jars with cheesecloth or netting 

 covers until the wasp-like parasites emerge. Then the parasites can 

 be set free to continue their good work, and the old cocoons and any 

 tent caterpillar moths remaining can be destroyed. This will be interest- 

 ing work for the summer, and we hope that the boys and girls will keep 

 it in mind and have the added interest in not only fighting an insect 

 pest directly, but in fighting it with another insect that is its natural 

 enemy. 



Notice. — We are advised by the Government Printing Bureau of 

 Canada that the book entitled "Farm Weeds," which we recommended 

 in the November leaflet, is out of print. We would suggest in its stead 

 "A Manual of Weeds," by Ada E. Georgia, pubhshed by the Macmillan 

 Company, New York City, and costing $2 net, postage extra. 



