New York AGRICULTURAL EXPERIMENT STATION. 171 
Experiment No. 22.—In this experiment the net profit from 
spraying was at the rate of $37 per acre. Mr. E. Haggerty of 
Clifton Springs witnessed the digging and weighing of the test rows. 
The loss from rot was at the rate of 4 bu. 33 lbs. per acre on the 
sprayed rows and 4 bu. 16 lbs. on the unsprayed rows. 
Experiment No. 23.—The test rows were much injured by ex- 
cessive rain in late spring. No rot. 
Experiment No. 24.—The unsprayed rows were “ dead several 
weeks before the sprayed ones.” No rot. 
Experiment No. 25.—The unsprayed rows were dead within two 
weeks after the first appearance of blight. 
Experiment No. 26.—The unsprayed row was only slightly in- 
jured by blight. 
Experiment No. 27.—The loss from rot was 1734 bu. per acre 
on the sprayed rows and 24 1-6 bushels on the unsprayed rows. 
Mr. Bennett thinks that more thorough spraying would have given 
better results. 
Experiment No. 28.—A part of the ten acres was sprayed five 
times, a part three times and the remainder only twice. The yields 
given in the table are for test rows located in the portion of the 
field sprayed five times. 
Experiment No. 29.—There were only four applications, but in 
the last two applications the plants were gone over twice each time. 
Hence, the number of sprayings is given as six. The unsprayed 
rows were severely injured by flea beetles and slightly also by bugs. 
There was a marked difference in the amount of rot. On the 
unsprayed rows the loss from rot was 34% bu. per acre, while on 
two sprayed rows 50 rods long there were but nine rotten tubers. 
Experiment No. 30.—Report obtained through the courtesy of 
Prof. J. L. Stone. Five double sprayings (= Io single sprayings) 
were made. The total yield of 20 acres was 5,383 bushels, which is 
at the rate of 269 bu. per acre. At digging time the market price 
of potatoes in Ithaca was 60 cents per bushel, but the crop was sold 
later at 70 cents per bushel. The actual net profit from spraying 
in this experiment was $70 per acre. 
Experiment No. 31.—At digging time the yield of sprayed and 
unsprayed rows was measured but not recorded. The yields given 
in the table are estimates. However, Mr. Chamberlin remembers 
