DISEASES OF PLANTS. 



335 



I 



attack of insects, and consists of a number of leafy imbricated scales 

 resembling a young cone. On examining the galls of commerce, the 



"lour, containing 

 nth a perfora- 

 are committed 

 he presence of 

 fs them. Mr. 

 ig off the sub- 

 d of getting rid 

 eaves, and burst 

 jrenate borders 

 .e galls resemble 

 . They are at- 

 3 leaf, the inner 

 Each contains 

 i, long after the 



the insects which 

 cts peculiar to it, 

 use great injury, 

 mses, have called 

 rious means have 

 Lmong them may 

 quor of gas-works, 

 er ; vapour of tur- 

 ives, for the white 





r in the Journal of the 



