APPLE PESTS. C5 



excrescences to form ou the shoots or branches. These 

 growths interfere with the proper flow of the sap, and 

 cauise the tissues to be diseased. Trees badly attacked, 

 therefore, become unhealthy, and refuse to bear freely. 

 The cottony substance covering the lice gets blown by the 

 wind or carried by the feet or feathers of birds to other 

 and healthy trees, and, as small lice are invariably 

 attached, new colonies are constantly being founded in 

 " fresh fields and pastures new," so to speak. Moreover, 



[Photo: J. G. Ela.k€y. 

 Al'I'LE SHOOTS I>^FESTED AVITH AMERICAN BLIGHT. 



colonies of this pest also live on the roots, and cause galls 

 to form thereon. 



Eemedies. — Thoroughly spray the trees in winter (Feb- 

 ruary) with Formulae Nos. 1 or 8. In March inject into the 

 soil some carbon disulphide to destroy the winter brood of 

 Aphides hibernating on the roots. Apply by means of 

 a special syringe, pushing the nozzle of the latter six 

 inches into the soil. Apply 2 to 4oz. to each tree, and 

 about 2ft. from the trunk. The carbon is highly inflam- 



