New York AGRICULTURAL EXPERIMENT STATION. 201 
The paris green was invariably used at the rate of one pound 
to fifty gallons of water, lime water or bordeaux as the case might 
be. The spraying was done thoroughly and uniformly with a 
knapsack sprayer, always going over the plants twice—out on 
one side of the row and back on the other. 
First spraying.—The first spraying was made July 7. At this 
time the plants were 7 to 9 inches high, .very vigorous and with 
foliage almost perfect. There were no flea-beetles and only a few 
colonies of newly-hatched Colorado potato beetles. - Series II re- 
ceived paris green in water, one pound to fifty gallons; Series ITI, 
paris green in lime water prepared by mixing two pounds of 
freshly-slaked lime with 50 gallons of water and then adding one 
pound of paris green; Series IV, paris green in bordeaux at the 
rate of one pound to 50! gallons of bordeaux prepared by dissolv- 
ing six pounds of copper sulphate in 50 gallons of water and add- 
ing lime slightly in excess of the quantity required to satisfy the 
yellow-prussiate-of-potash test; Series V, bordeaux only (some 
of the same lot as that used on Series IV, betore adding paris 
green). 
In this spraying, all mixtures were applied at the rate of 125 
gallons per acre. The first rain following the spraying was a 
heavy shower:on July 9. 
Second spraying.—-This spraying was made July 22. The plants 
were very thrifty. A few were showing blossoms. Much of the 
bordeaux had been washed off by rain and a large amount of new 
foliage had grown since the previous spraying. ‘There were no 
flea-beetles. A few hills here and there were badly infested with 
Colorado potato beetles. Series II and III were treated exactly 
as in the first spraying. On Series IV and V the treatment was 
the same as in the first spraying except that the bordeaux was 
_made by the 6-6-50 formula. All spray mixtures were applied 
at the rate of 125 gallons per acre. 
In this spraying an error was made. Rows 8, 9, 10 and Il 
were given the wrong treatment. This necessitates the rejection 
of these rows in making up the results of the experiment. 
During the first night following the spraying it rained lightly 
all night, and on the day following there were showers alternating 
with periods of sunshine. 
