525 
REMEDIES FOR GARDEN AND ORCHARD CROP 
PESTS. 
No. 1.—Borpzavux Mrxrure (Full Strength for Winter Spraying). 
Sulphate of Copper (bluestone) ... .. 6lbs. 
Quicklime (freely slaked) ... ais «  4lbs. 
Water tate ‘it site 22gals. 
(a.) Dissolve the bluestone in 10 gallons of water by placing 
it in a sack suspended in the water and moving the sack about, 
when the sulphate will quickly dissolve. (b.) Make a whitewash 
with the lime, strain to separate the grit, and bring the milk of lime 
to 10 gallons. Mix a and b. and make up to 22 gallons. Use only 
wooden or earthenware vessels, When the foliage is out, use the 
half-strength mixture by diluting in double the volume of water. 
To determine if the mixture is safe to use on tender foliage, insert 
a new nail or the blade of a penknife for at least half a minute ; if 
copper is deposited on the steel, lime must be added. 
Another test is the Ferrocyanide Test :—Add a few drops of 
a strong solution of yellow prussiate of Potash. If lime is lacking, 
and if there is an excess of sulphate of copper the mixture will turn 
black, but it will show no cuange of colour if the quantity of lime 
is sufficient. 
Sulphate of Copper dissolving 
in a tub of water. 
No. 2. 
The same with a small quantity of molasses added. 
No. 3. 
The same as Nos. ! or 2, with 44 gallons water. Half strength 
for tender foliage. 
