New YorK AGRICULTURAL EXPERIMENT STATION. iol 
spraying. Leaves of all ages were affected with large copper- 
colored dead spots, some of which closely resembled the spots of 
late blight (See Plate XVIII). The rows of Series [II were not 
in the least injured. . 
THIRD SPRAYING. : 
The third spraying was made August 1. The quantity of 
arsenite of soda was again reduced. Series II was sprayed with 
2 pints of arsenite of soda and 4 pounds of lime in 50 gallons of 
water, while Series III received the same amount of arsenite of 
soda in bordeaux made by the 64-50 formula. Series IV re- 
ceived only bordeaux of the same formula. 
The rate of application was 200 gallons per acre. 
But little if any injury resulted from this spraying. 
FOURTH SPRAYING. 
The fourth spraying was done August 12, as follows: 
Series I. Check. Not sprayed. 
Series II. 2 pints arsenite of soda+ 4 pounds lime + 50 gallons 
water. 
Series III. 2 pints arsenite of soda+ 50 gallons bordeaux (6— 
4—50 formula). 
Series IV. Bordeaux only (6—-4—-50 formula). 
The rate of application was 225 gallons per acre. 
On August 20 it was observed that Series II had been severely 
injured by the spraying, but Series III showed no trace of injury. 
FIFTH SPRAYING. 
The fifth and last spraying was made August 30 on Series III 
and IV with bordeaux only. Series IT was so nearly dead from 
blight and spray injury that there was no object in further treat- 
ment. Probably only about one-fifth of the foliage on Series II 
was alive on this date. The check rows still retained about one- 
fourth their foliage, the remainder having been killed by blight. 
On September 16, Rows 5, 6, 7 and 8 were photographed. (See 
Plate XIX.) Row 5 (check) and Row 6 (arsenite of soda in lime- 
water) were entirely dead and the stems dry. Row 7 (arsenite 
of soda in bordeaux) and Row 8 (bordeaux only) were equal 
in appearance. About three-fourths of the foliage on these rows 
was still green. 
