154 REPORT OF THE BOTANICAL DEPARTMENT OF THE 
Test No. 1.—The unsprayed rows were 286 feet long. The fol- 
lowing yields were obtained: 
Second sprayed row on the west, 163 lbs. marketable tubers. 
Second sprayed row on the east, 126% lbs. marketable tubers. 
Average of two sprayed rows, 14434 lbs. marketable tubers. 
Middle unsprayed row, 99% lbs. marketable tubers. 
Vield, sprayed, 133 bu. 39 lbs. marketable tubers per acre. 
Yield, unsprayed, 91 bu. 38 lbs. marketable tubers per acre. 
Gain, 24 bu. r lb. marketable tubers per acre. 
There were a few rotten tubers on the unsprayed row but none 
on the sprayed rows. The yields of small and rotten tubers were 
15 bu. per acre for the sprayed and 20 bu. 19 lbs. per acre for 
the unsprayed. 
Test No. 2.—The unsprayed rows were 704 feet long. The 
yields were as follows: 
Second sprayed row on the west, 303% lbs. marketable tubers. 
Second sprayed row on the east, 280 lbs. marketable tubers. 
Average of two sprayed rows, 2915¢ lbs. marketable tubers. 
Middle unsprayed row, 193% lbs. marketable tubers. 
Yield, sprayed, 109 bu. 2t lbs. marketable tubers per acre. 
Yield, unsprayed, 72 bu. 34 lbs. marketable tubers per acre. 
Gain, 36 bu. 47 lbs. marketable tubers per acre. 
As regards rot, the conditions were about the same here as in 
Test No. 1; viz., but little on the unsprayed and none on the 
sprayed. The yield of small and rotten tubers was 16 bu. 58 Ibs. 
for the sprayed and 24 bu. per acre for the unsprayed. 
Combining the results obtained in the two tests there is an aver- 
age gain of 39 bu. 24 lbs. marketable tubers per acre. The average 
percentage of gain was 48.2 per ct. 
On the date of digging the test rows the market price of potatoes 
at Rupert, Vt., the nearest shipping point, was 40 cents per bushel. 
At this price the gain of 39 bu. 24 lbs. would be worth $15.66. 
After deducting the cost of spraying, $4.02, there remains a nel 
profit of $11.64 per acre. Probably the actual profit will be greater 
than this. Up to the present writing (December 23) only one 
load has been sold at 65 cents per bushel of 65 pounds. The re- 
mainder of the crop is in storage and seems to be keeping well. 
THE SYOSSET EXPERIMENT. 
This experiment was conducted by John S. Burke, Syosset, Long 
Island. Two fields of potatoes were sprayed—one of ten acres 
planted with three different varieties and one of eleven acres planted 
