SCIENTIFIC RESEARCH AND INVESTIGATIONS 7 



been correct. The significance of the results in this direction, 

 obtained at the East Mailing Research Station, is great indeed, 

 for in the golden days of the future that disparity in the growth 

 and cropping powers of trees of the same variety, growing side by 

 side, hitherto inexplicable, but now satisfactorily accounted for, 

 will then be a thing of the past. 



FIG. 2. Types of Stocks (Crab) 



Equally gratifying advance is being made by those who are 

 engaged in the campaign against insect pests. The life history of 

 each is being laboriously pursued as the only means whereby its 

 ultimate destruction can be effected. The losses caused through 

 the depredations of insects are incalculable. For generations we 

 have been righting our enemies with results not very satisfactory 

 to ourselves, because we were fighting in the dark. We did not 



