New YorK AGRICULTURAL EXPERIMENT STATION. 85 
was used in only one spraying, that of July 10, in which case it 
was used at the rate of 10 ounces to 50 gallons, as on series I, 
and with equally good results. On account of the weather con- 
ditions being exceptionally favorable to late blight during the 
week following July 23 it was considered advisable to spray on 
July 30, although only a week had elapsed since the last spray- 
ing. However, subsequent events showed that this was un- 
necessary. It might just as well have been postponed until 
August 6, which would have made the interval between spray- 
ings two weeks, as originally planned. Had this been done, the 
next two sprayings would each have occurred one week later, 
and the seventh spraying might then have been omitted. 
Series III.— Series III consisted of rows 8, 6, 9, 12 and 15. 
They were not sprayed at all with bordeaux, but were treated 
twice (July 10 and July 30) with paris green in lime water to kill 
the “bugs.” The paris green was used at the same rate as on 
series I and II; that is, at the rate of 10 ounces to 50 gallons of 
water. Although the “bugs” were practically all killed by the 
application made July 10, the same as on series I and II, sprayed 
with bordeaux, it was necessary to make a second application to 
series III on July 30; whereas, series I and II required but the 
single treatment for “bugs.” However, the “bugs” were so 
completely controlled by the two treatments that they did not 
harm the plants. 
At Riverhead: Series I.— This series consisted of four rows — 
Nos. 2, 5, 8 and 11, which were sprayed with bordeaux mixture 
three times; namely, on May 26, June 20 and July 22. No poison 
was used except in the second spraying, when “ green arsenoid ” 
was added to the bordeaux at the rate of 5 ounces to 50 gallons. 
Series [I.— This series consisted of four rows — Nos. 1, 4, 7 and 
10. They were sprayed with bordeaux mixture seven times; 
namely, on May 26, June 3, 20 and 30, July 11 and 28, and 
August 5. “Green arsenoid” was added to the bordeaux on 
June 20 (5 ounces to 50 gallons), on June 30 (6 ounces to 50 
gallons), on July 8 (8 ounces to 50 gallons), and on July 238 
(5 ounces to 50 gallons). There was no necessity for using 
poison on this series to kill “ bugs,” because there were none 
