POTATOS. 
423 
Potato growing side by side during the past season ; that on the 
right-hand side having been sprayed three times and that on the 
left hand not having been sprayed at all. It will be seen that 
the effect was very marked. The growth of the sprayed plants 
continued some time after the unsprayed portion had died down. 
The weights of the two plots when hfted were as follows :— The 
sprayed, 3 cwt. 1 qr. 25 lbs., and the unsprayed, 3 cwt. 1 qr. 4 lbs. 
Strange to say, the quantity of diseased tubers was precisely the 
No. 43. — Tomato Flowers. 
Fig. 69. 
same in both plots, viz., 4 lbs. It is, therefore, a question whether 
the additional weight per acre would compensate the grower for 
the somewhat laborious task cf spraying his crop three times 
during the growing period. 
In the elaborate series of experiments conducted this year in 
conjunction with Professor Gilchrist, of the University Extension 
College, Reading, we found that in the first and second early 
varieties no advantage is gained by spraying. These crops finished 
their growth before disease could attack the plants, and the 
