529 
Arsenate of Lead is used as a substitute. For first spraying 
for codlin moth larvae and leaf-eating insects 24lb. of arsenate of 
lead to 50 gallons of water; for subsequent sprayings, 14lbs. 
arsenate of lead to 50 gallons of water. 
No. 14.—Resin anp Sopa Wasu 
Resin (pounded) ... aise iol ..  5lbs. 
Caustic Soda (‘10 per cent.) ats wos, ‘TIDs 
or, 
Washing Soda sa a6 se ... 3ibs. 
Fish Oil... et bi ‘ine swe. pt. 
Water, to make... ae mee -. 25gals. 
Boil ingredients, with enough water to cover, for 1 to 2 hours, 
adding water slowly if there is a tendency to boil over. The com- 
pound will assume the colour of black coffee. Ascertain that 
mixture will assimilate with water by occasionally pouring a small 
quantity of mixture into water. If not boiled sufficiently will 
form a ropy mass in bottom of vessel. Dilute with warm water, 
stirring all the time to one-third, the first bulk (8 gallons), making 
a stock mixture to be diluted to the full amount when used. This 
mixture can be used twice or three times as strong on deciduous 
trees when dormant. 
No. 15.--Inon SuLpuipe Spray. 
(For Powdery Mildew of Apple Trees.) 
Place 25 gallons of cold water in a barrel and immerse in this 
6lbs. of sulphate of iron. When this has completely dissolved, 
add gradually, stirring all the time, 12 pints of commercial lime- 
sulphur, 32° Baume. 
The addition of the lime-sulphur will produce a bulky black 
precipitate which, in a few minutes, will begin to settle. To ascer- 
tain if sufficient lime-sulphur has been added, carefully dip out 
with a clean glass a little of the top liquid after settling has been 
taking place for 5 to 10 minutes. If this liquid is clear, showing 
no yellow colour, add a little more lime-sulphur to the stock in 
the barrel, stir well, and after a few minutes settling, again test 
as before by removing some for examination in a clean glass. This 
operation must be repeated until the liquid dipped off with the 
glass shows a pale yellowish tint. When this occurs, no more 
lime-sulphur is to be added, and the mixture in the barrel must 
be allowed to stand until the iron sulphide has completely settled, 
which will take about eight hours. Then the liquid, on top of the 
black precipitate at the bottom of the barrel, must be syphoned 
off and thrown away, for it is useless, and sufficient water added 
to bring the mixture in the barrel to 25 gallons. 
