THE REPORT OF THE 



[19 



The Scurfy Bark Louse (Chionaspis furfurus) is another scale which is too preva- 

 lent in many localities 

 (Fig. 17). It can be 

 treated in the same way 

 as the Oyster- Shell Bark 

 Louse. 



The Woolly Aphis 

 (Schizoneura lanigera) 

 This insect is readily re- 

 cognized by its woolly 



Fig. 18. 



covering (Fig. 18). It 

 can be readily treated 

 with applications of kero- 

 sene emulsion or tobac- 

 co water. It infests 

 apple trees. 



Fig. 17. 



The Garden. 



Slugs have been unusually plentiful, and those infesting the raspberry and straw- 

 berry were extremely troublesome. These are more dreaded than the other insects 

 infesting these plants, inasmuch as they continue their depredations through the fruiting 

 season, when it would be unsafe to use poison for their destruction. 



Plant Lice or Aphids were quite troublesome od currants and gooseberries. They 



'*•» wf pm. cause the leaves of the currant to wrinkle ; in gooseberries 



r3Jjfw& rosettes or tufts at the tips of the branches are formed. With- 



f ^'ji?Pir* i n these tufts can be found Aphids of all ages, and with these 



ililililfift are ^ e lady-birds trying their best to subdue them. The fig- 



< Nilflr %» ures represent two common forms, Fig. 19 the 9-spotted, and 



Fig. 19. Fig. 20. Fig. 20 the 13-spotted. 



The Raspberry Fruit Worm (Byturus unicolor) was more prevalent than usual this 

 year. This small white worm about \ inch in length feeds on the flesh of the berry close 

 to the receptacle. Their presence is often overlooked in the preparation of the fruit for 

 the table. 



At the College both the raspberry and the blackberry were slightly damaged by the 

 presence of galls on many of their roots, produced by a cynipid (Rhodites radicum). 

 Wherever the galls were present the canes were found to be lying prostrate on the 

 ground and a few died from the eflects. 



The Colorado Beetle (Doryphora decemlineata) was just as abundant as ever at the 

 College this year, but it has been frequently reported that the severe ccld of last winter 

 killed many hibernating adultp, and that the supply was much below the normal. 



