124 REPORT OF THE BOTANICAL DEPARTMENT OF THE 
former years and more nearly representative of the soil of eastern 
Long Island. In 1904 the land grew cauliflower. The seed pota- 
toes were of the variety Green Mountain planted by hand, April 25 
and 26, in rows three feet apart with the hills 15 inches apart in 
the row. The plants were given good cultivation throughout the 
season. , 
PREPARATION AND APPLICATION OF THE BORDEAUX MIXTURE. 
Both at Geneva and at Riverhead the bordeaux mixture used 
was approximately of the 1-to-8 formula and applied very thor- 
oughly with a knapsack sprayer as in former years. 
DATES OF SPRAYING. 
At Geneva: Series I,—The rows of this series, I, 4, 7, 10 and 
13, were sprayed three times with bordeaux mixture — July 3, 
August 7 and 25. At the time, of the first spraying the plants 
averaged about one foot in height. Some hills were badly infested 
with bugs, but the majority of the plants were yet uninjured. Paris 
green was applied with the bordeaux at the rate of one-half pound 
to fifty gallons. This application was so effective in ridding the 
plants of bugs that it was unnecessary to use poison again. Con- 
sequently, the second and third sprayings were made with bordeaux 
alone at such times as seemed best for the control of blight. 
_ Series II.—This series consisted of rows 2, 5, 8, 11 and 14. The 
plants were sprayed with bordeaux mixture five times — June 29, 
July 13 and 27, and August 12 and 24. At the time of the first 
spraying the plants were 7 to 10 inches high. The bugs were just 
commencing to hatch, so paris green was used with the bordeaux 
at the rate of one-half pound to fifty gallons. On July 13 when the 
second spraying was made it was necessary to use poison a second 
time. There were then more bugs on this series than on either 
series I or III. Evidently, the first application of poison was made 
a little too early for the best results on bugs. No poison was used 
in the last three sprayings. 
Series III.—Series III consisted of rows 3, 6, 9, 12 and 15. It 
was the intention not to use any bordeaux on these rows, but row 
3 was accidentally sprayed once with bordeaux on August 24. The 
