New York AGRICULTURAL EXPERIMENT STATION. 191 
trees were much incrusted with the scale, and many of the 
remaining ones were infested to a lesser degree. 
The number and variety of the trees and their conditions with 
respect to scale furnished an excellent opportunity to work out 
the problems in view. In each experiment with each kind of 
fruit, abundant checks were reserved. In selecting these the aim 
was that the trees should be representative of the varieties and 
of similar condition with respect to scale and pest treatment as 
those under experiment. 
THE PREPARATION OF THE SPRAYS. 
The Bordeaux-Arsenical Miature. 
MOMMA SIMND NAC N oe ae atin ae oe ee esl e eae gol a: we ae peers be Ib: 
SIVLELS TER) Aisin A See ge ra die hia rece Re Cra ac 31 to 5 Ibs. 
AAEM RTE ne are en rien tic areal Saeed Maas ie aie nie ae satel 50. gal. 
Le SileiSh ARE STG UR a ere er gaa nrg rar eR Se ao 1% |b. 
The bordeaux mixture was prepared by the common method. 
In the treatment of apple trees the paris green was used in the 
amount stated; but for peach, plum and pear, only one-quarter 
of a pound of the poison was used for this quantity of spraying 
mixture. The paris green was added to the freshly-prepared bor- 
deaux mixture. 
The Lime-Sulphur-Caustic Soda Wash. 
LEER acs 9 hi ey paneer else acon ao praesent ancien Rie mnie pes Fn weir 30 Ib 
“TRL TUES TIE a Seeger Rue erat Prt a Sn PRE See re La eb: 
WU IMR Gel so pe es oi sos, oe cuss Shae ene gag « #42 » osesoy ish e wae. s4age 4-6 lb. 
ee ett ch she Sea laptaais aicb ajc yA S.<.yss ty Ay 2h ceysenieiy es 50 gal. 
The formula used in the experiments was essentially as above, 
though slight changes in proportions were made in some cases. 
In preparing the wash, the lime was started to slake with six 
gallons of water; and while it was slaking, the sulphur, which 
had just previously been made into a thin paste with hot water, 
was added and thoroughly mixed in with the slaking lime. To 
prolong the boiling of the wash, the caustic soda was then added, 
with water as needed, and the whole mixture was kept thoroughly 
stirred. As soon as the chemical action had ceased, the required 
amount of water was added, when the mixture was ready for use. 
