1900 



ENTOMOLOGICAL SOCIETY. 



75 



The Pea-weevil and the Pea-aphis have made the growing of peas an uncertain crop 

 in many localities. There is a practicable remedy for the weevil in the use of carbon 

 bisulphide, or in the holding over of the seed peas for another season, when the weevils 

 will have disappeared and the good seeds can be picked out. With regard to the Pea- 

 aphis, should it become destructive it will be necessary for the pea grower to change his 

 method of cultivation, and adopt drill planting, instead of planting broadcast as is done 

 at the present time. 



The Corn Worm (Heliothis armiger). 

 Fig. 36. This worm has been more numerous 

 this season than usual, and appears to find 

 Ontario conditions quite congenial. The green 

 corn offeied for sale in the Guelph market was 

 frequently injured by the worm, and the Ex- 

 perimental Department of the College Farm 

 found many ears badly injured at time of 

 harvesting. The Trent Valley Canning Oo. of 

 Trenton reported on October Ist, that they had 

 received a few loads of sweet corn containing 

 many badly injured ears ; and that in one 

 locality from which they received corn the 

 worm was very prevalent. 



Observations point to the view that the 

 Corn-worm is single brooded with us, but it 

 may be double-brooded in some of the southern 

 localities. Late fall-plowing will do much to 

 break up the cells in which the pupae winter, 

 thus causing the death cf the pupae. 



Grasshoppers were abundant in late sum- 

 mer, not only in meadows and cultivated fields, 

 but also in gardens where tomatoes, cabbage, 

 celery, and other vegetables were often des- 

 troyed. Very likely the dryness of the season 

 and the absence of frost were important factors 

 which contributed to their abundance. 



The Cabbage Butterfly (Pieris rapae). 

 This insect was more abundant than usual in 

 cabbage and turnip fields, especially in the 

 region lying to the east of Toronto. *' Thousands of these winged insects could be seen 

 flying over turnip fields." Although parasites are usually very abundant, it will not do 

 to leave the work of extermination to them alone. A good practicable method of killing 

 the cabbage-worms on small areas especially is to dust a mixture of one pound of insect 

 powder and five pounds of flour through a cheese-cloth bag upon the infested plants. 



iig. 36. An Ear of Corn affected by Corn- 

 Worm ; Caterpillars are very variable in their 

 markings. (Original). 



NATURE STUDY LESSONS ON THE SQUASH BCTG (ANAS A TEISTIS). 

 By Prof. W. Lochhead, Ontario Agricultural College, Guelph. 



Introduction. That a great awakening in the study of nature is in progress must 

 be evident to every person who is watching the sigus of the times. Both parents and 

 teachers are demanding the introduction of nature-study into the daily course of the 

 school, and scholars are becoming earnest nature seekers and observers. 



