212 THE CANADIAN ENTOMOLOGIST. 



(Cephus pygmceus).. by cutworms and grasshoppers in Manitoba, and by- 

 excessive heat and drought over a large area of the Northwest last 

 summer. The pea weevil and the pea aphis are described as very 

 injurious, and growers are instructed how to deal with them; many pages 

 are then employed in describing the variegated and spotted cutworms, 

 their natural enemies and parasites, and the best methods of repressing 

 their attacks. The San Jose scale and a variety of other insects are also 

 discussed, and a list is given of a large number that have been injurious 

 to fodder crops, roots and vegetables, and fruits. Honeybees have a 

 chapter devoted to them, and this section of the Report is concluded 

 with a description of the successful experiments made for destroying wild 

 mustard by spraying with a solution of copper sulphate. C. J. S. B. 



CORRESPONDENCE. 



The Codling Moth. 



Sir, — Prof. Gillette, of the State Agricultural College, Colorado, is 

 trying to clear up some of the lacking information concerning that terrible 

 pest of the fruit-grower, the Codling Moth, and I think some of our 

 members may do very valuable work for horticulture in North America by 

 co-operating with him and sending him accurate and careful observations, 

 with exact dates, upon the points mentioned in the following extract : 



Prof. Gillette says : " I am anxious for further information from 

 some northern parts. I particularly want to know the date when larvae 

 of the first brood begin to leave the apples to spin, and what proportion 

 of the larvae taken about the middle of July or a little later will transform 

 to moths the same season. To determine the first point, a few bands 

 could be placed about bearing trees, and frequently examined for worms 

 after the last week in June until the worms appeared. To determine the 

 second point, a good number of the worms or pupa? could be taken when 

 they are rather abundant under bands, probably about the end of July, 

 and placed in boxes for rearing. I should be very glad to receive a 

 number of larvte taken any time in July from any place in Canada." 



Prof. Gillette has done and is doing such excellent work in practical 

 entomology that I feel sure some of our members who have an opportunity, 

 without much trouble, to help in this important investigation will do so. 

 The results will be given to the world, and all fruit-growers and fruit 

 consumers will benefit. J. Fletcher, Ottawa. 



Mailed June 29th, 1901. 



