—206— 
That is to say these results indicate that 75.6 per cent. of the cher- 
ries liable to injury were saved by the treatment with London purple. 
It will at once be noticed that the percentage of injury on the un- 
sprayed trees (6.17) was very small, being less than one-half that of last 
year (14.15). This was probably due in part to the fact that the cher- 
ries ripened nearly a week earlier this year, the horticulturist having 
been picking for market June 11th, while last year it was necessary to 
wait until June 20th. The ratio between the injury on the sprayed and 
unsprayed trees, however, was nearly the same, the difference in the per- 
centage of benefit for the two seasons being but .2 per cent. 
In the second experiment this year two young trees of an unknown 
variety were used. They were situated on the south side of the orchard 
of Early Richmond trees; but were somewhat isolated and much ex- 
posed to curculio attack. The variety ripens considerably later than the 
Early Richmond and consequently like most late cherries it is much 
more liable to injury. 
The trees were sprayed on the same dates as the others—May 15th, 
21st and 25th, — and the fruit was examined June 14th. Neither tree 
bore much over a thousand cherries, so that they were practically stripped 
by the picking. 
The cherries on the sprayed tree showed an injury of 22.6 per cent. 
while those on the unsprayed tree had been injured to the extent of 57.7 
per cent., giving a percentage of benefit of 60.5. 
I believe however, that better results would have been obtained had 
I waited some days to make my first spraying, and made each of the 
others later. A large proportion of the injuries on the sprayed tree had 
been made but a short time before the examination, probably after the 
last application of London purple had been washed off by the frequent 
rains. 
EXPERIMENTS WITH PLUMS. 
The plum experiment was not an exact duplicate of the one made 
last season because the main object this year was to discover some means 
of preventing the injuries of the Plum Fruit Rot (A/oniha fruchgena). 
Consequently a combination treatment was necessary. The trees of a 
half acre orchard containing four varieties were sprayed with London 
purple alone, in the proportion of one ounce to ten gallons of water, 
May 15th, soon after the petals had fallen. They were next sprayed 
May 24th, with a combination of London purple and the Bordeaux 
mixture, which treatment was repeated June Ist. 
No check trees were left in the orchard on account of the fruit rot 
experiment, but two plum trees on the grounds a short distance from 
the orchard were left untreated. The latter set a good crop of fruit but 
