748 Journal of the Department of Agriculture. 



comparison plain in the tables that follow, the number of beetles 

 taken in each garden the first day is stated as 100 per cent. Thus if 

 200 beetles were taken the first day, 50 the second, and 20 the third, 

 the figures would appear as 100 per cent., 25 per cent., and 10 per 

 cent., and so on. 



Results in 1918. — Collecting was done in three gardens, marked 

 A, B, and C in the table. A and B were private gardens, C repre- 

 sents the vegetable garden of the Experimental Farm. In the first 

 two gardens the beetles were taken principally from ornamental 

 plants, in the third from broad beans, etc. The results were as 

 follows : — 



Dec 



In gardens A and B only three or four beetles were found during 

 the rest of the season ; a few were found in C but not enough to be of 

 any consequence. 



Results in 1919. — During the early part of the season the beetles 

 attacked the plum blossoms in the orchard (D) of the Experimental 

 Eaim, and later on the vegetable garden (E). Results of collection : — 



Orchard D. Garden E. 



No more beetles were found in either D or E during the rest of 

 the season. In the case of the plum orchard (D) this was partly due 

 to the fact that the weather suddenly became cool, and by the time 

 it became warm again most of the petals had fallen, but the major 

 factor in reducing the number of beetles was the collecting*. The rapid 

 elimination of the insects from the vegetable gardens was due entirely 

 to collecting, the superiority of the results over those of 1918 being 

 due, perhaps, to the fact that the beetles were less numerous in 1919 

 than during the previous year. 



