Insects Injurious to the Apple. 141 



June, 1906, that he was having " the curled leaves stripped off the 

 shoots affected, in the case of apple trees, to prevent spreading, as 

 spraying would not touch a tenth part of them, as they are inside 

 the curled leaves." This seems a tedious affiiir, but, no doubt, is a 

 very wise one, when one looks over the plantation in the winter, and 

 sees the enormous harm these apple aphides have done. 



In Nova Scotia (7) growers have been experimenting with thick 

 lime and salt wash similar to the Chapman wash recommended for 

 Apple Sucker and Plum Aphis. The effect of this treatment on 

 Apple Aphis eggs has been far from satisfactory. The wash will not 

 hold sufficiently firmly on the young shoots where the eggs are mostly 

 placed to prevent the egress of the young aphides. 



References. 



(1) Theobald, F. V. Report on Economic Zoology for the year ending April 1. 



1905, pp. 22-33 (1905). 



(2) Bucl-ton, G. B. ' Monograph of British Aphides,' II., p. 44 (1K77). 



(3) Ormerod, E. ' Handbook of Insects Injurious to Orcliard and Busli Fruits,' 



p. 6 (1898). 



(4) Whitehead, Sir C. ' Insects Injurious to Fruit Crops,' p. 82 (1886). 



(5) Major, Joshua. ' A Treatise on the Insects most Prevalent on Fruit Trees,' 



etc., p. 9 (1829). 



(6) Sanderson, Divight. Thii'teenth Annual Report Delaware Coll. Agri. Exp. 



Sta. (1902). 



(7) Forty-second Annual Report Nova Scotia Fruit Growers' Association, 1906, 



p^ 98 (1906). 



(8) Carjjcnter, G. H. Economic Proceedings Royal Dublin Society, vol. I., 



pt. 6, p. 301 (1905). 



THE WOOLLY APHIS. 



(ScJiizoncurrf hinificra. Hausmann.) 



The persistent increase of this aphis during the hist few years in 

 most of the fruit centres of Britain makes it imperative that growers 

 should take steps to check its increase in their plantations. Of still 

 greater importance is it for nurserymen to see that the stock they 

 send out is free from this insect. During the past few years com- 

 munications have been sent me by several growers, stating that they 

 have introduced this insect with purchased stock. 



One correspondent, writing from Liscard, Cheshire, says : '' I have 

 been buying apple trees from various nurserymen, and have intro- 

 duced American Blight into my orchards, and my gardeners do not 

 seem to be able to check its progress." 



