103 



This forms a stock solution, and when ready to spray put 40* gallons of water 

 in another barrel, and take half a gallon of the stook solution and add to It; 

 strain, and apply with tlic spray pump, taking care to wet the under sides of 

 the leaves. 



At Chilliwack. a strong hot solution of whale-oil soap, applied with hand 

 sprayers, has given good results against the red mite of the hop, but very care- 

 ful work is required to reach the pests, and it must be done soon after the 

 mites are hatched out. 



IfcDicilics. — Various iirejiarations of suljihur and soap have been recom- 

 niende<l, used separately or together, mixed with water, and applied to the 

 bushes with a syringe. Tlain soap and water, or water alone, freely applied, 

 is regarded by some as efficient, as the insect is known to thrive best in a dry 

 atmosphere. In applying any liquid, it is necessary to wet the under side of 

 the leaves in order to make the application effectual, since, if applied to the 

 upiier surface only, the mites would remain uninjured beneath. — IV. .Saianlers. 

 Pear-Le.\f Blister Mite iPIiiitoiifiis iii/ri, Xalicpa). 



A considerable amount of injury is done every year in all parts of Canada, 

 where the pear is grown, by the operations of the pear-leaf blister mite. The 

 irregular blotches, about one-eighth of an inch in diameter and frequently 



(Fig. 19.) The Mito. (Fig. 20.) Work of Mitp. 



confluent, caused by these mites, are frequently so abundant on the foliage 

 as to make it impossible for the leaves to perform their functions. These 

 blotches, when examined, are found to be hollow blister-like galls with a hole 

 in the centre through which large numbers of almost invisibly small mites 

 issue and attack fresh parts of the leaf. Few people recognise this injury as 

 the work of an insect at first sight. It is nearly always sent in as a fungous 



*Ainerican. 



