Use best grade of lump lime obtainable. Should test 90 per cent
calcium oxide, and be free from impurities. :

Heat to boiling in cooking vessel about fifteen gallons of water
then gradually place in it the fifty pounds of lime. As the lime be-
gins to slake add the 100 pounds of sulphur. After the slaking of the
lime has ceased, add enough water to make the full amount required _
by the formula. If fire is used additional water will need to be added ©
to keep the mixture to the required amount. If steam is used this will
not be necessary. The mixture should be kept at the boiling point for


1915 — INSECTICIDES AND FUNGICIDES — IQI5. 23


practically one hour or until all the lime and sulfur are dissolved. Con-
stant stirring will be necessary. A measuring stick graduated accord-
ing to the capacity of the vessel used will aid in keeping the volume
of solution up to the required amount. When additions of water are
necessary, hot water should be used.
i Place in an air tight barrel when cool, and use as needed. A
hydrometer reading should be made of the prepared solution and dilu-
tions made according to table.
_COMMERCIAL LIME SULFUR SOLUTION.
_ This solution can be obtained on the market and is ready to apply
when properly diluted with water. A hydrometer reading should be
made before using. 32 Degrees Baume is considered as standard and
commercial brands should give this reading. (This test is of no value
if salt or any other substance, which will raise the specific gravity, has
been added to the solution. )

Dilute according to table herein given.
TABLE I.
Dilutions for Dormant and Summer spraying with Lime—-Sulfur mixtures.
