72 



Mr. Adams, of Marden, who kindly undertook to obtain for 

 me, a fair reliable average of the number of Apple trees in full 

 vigour, which bear Mistletoe in that district, has sent me the 

 following result of his examination of all the trees in six differ- 

 ent orchards. Mr. Adams was careful to select orchards in 

 which the trees had attained their full growth and were in full 

 bearing — avoiding on the one hand, orchards of very young trees, 

 where comparatively few were affected by the parasite, and on the 

 other, those containing very old trees, where almost all of them 

 bear Mistletoe. 



