EESEARCHES AT WISLEY. 



163 



EESEARCHES AT WISLEY. 

 By G. Massee, F.L.S., V.H.M. 



[Lecture given on November 20, 1906.] 

 Black Cukrant Gall Mite. 



At the time these investigations were commenced, owing to the absence 

 of a laboratory, it was imperative that the subjects selected for investiga- 

 tion should be of such a nature that the great bulk of the work could be 



Fm. 36. — Black Curkant Shoot bearing "Big-buds." Natural Size, 



conducted in the field. The black currant gall mite, or " big-bud " (fig. 36), 

 was suggested and finally selected as the principal subject for investigation, 

 the work being carried on at Wisley, with check experiments at home and 



M 2 



