New York AGRICULTURAL EXPERIMENT STATION. 107 
those in the northern part of the State once and those on Long 
Island twice, for the purpose of taking notes. 
As far as possible the fields selected for experiment were 
located on a public road where the results of the experiment 
could be seen by passersby. The size of the experiment fields 
varied from two and two-thirds acres to 31 acres, the total acre- 
age of the fourteen experiments being 180 acres. In one experi- 
ment the bordeaux mixture was applied with a five-gallon com- 
pressed air sprayer. In the others, horse sprayers of several 
different kinds were used. 
THE GAINESVILLE EXPERIMENT. 
This experiment was made by Brainerd & Beaumont, Gaines- 
ville, Wyoming County. Twenty-six acres of potatoes, all in 
one lot, were sprayed four times at a total expense of $3.19 per 
acre and the yield was thereby increased by 74 2-3 bushels per 
acre, worth $32.11. The net profit on the operation was at 
the rate of $28.92 per acre or $751.92 on the field of 26 acres. 
The spraying was done with an old style “Aroostook” power 
sprayer manufactured by the Field Force Pump Co., Elmira, 
N. Y. (See Plate VII, fig. 1.) This sprayer covers five rows 
at each passage with one nozzle per row, applying the bordeaux 
at the rate of about 50 gallons per acre. Two horses are re- 
quired to haul it. The pumping is done with power obtained 
from the wheels. The dates'® of spraying were as follows :— 
First, July 21 and 22; second, July 29 and 30; third, August 15 
and 17; fourth, August 25 and 24. To control bugs arsenite of 
soda’? was added to the bordeaux in the first three sprayings at 
the rate of four quarts of stock solution to 50 gallons. 
1*The dates given are those on which the test rows were sprayed. On 
July 8 and 9 eleven acres of the earlier-planted portion of the field were 
sprayed. In the spraying of August 23 and 24 only 19 acres were sprayed, 
including the 15 acres of the later-planted portion of the field and four acres 
of the earlier planted. Thus the entire field was sprayed four times and 
four acres had five sprayings; but the test rows were sprayed only four 
times. 
“For the preparation of arsenite of soda see page 190. Brainerd & Beau- 
mont used four quarts of the stock solution of arsenite of soda in 50 gallons 
of bordeaux and applied this quantity on an acre. This is equivalent to the 
application of two pounds of paris green per acre which we believe is more 
than is usually required. On the unsprayed rows the poison was applied 
at the same rate, using it with lime water instead of with bordeaux. So 
heavy an application with lime water is dangerous, but Brainerd & Beau- 
mont inform us that very slight injury occurred in their experiment. They 
estimate the cost of the arsenite of soda stock solution, including expense 
of preparation, at ten cents per gallon, making it one-third as expensive as 
paris green at fifteen cents per pound. 
