INJURIOUS INSECTS OF 1909 AND IQIO. 151 
scale insecticide it has been found, quite recently, that in its several 
forms it is an excellent fungicide, and will, in many cases, replace 
Bordeaux mixture. There are several formulae for making this 
wash, three of which are appended. 
The Boiled Mixture: 
Best stone lime, 15 pounds (not over 5 % impurities). 
Flowers of sulfur, 15 pounds. 
Water, 50 gallons. 
Slake the lime in a small quantity of hot water, add the sulfur 
gradually and stir thoroughly. Dilute the mixture to 15 gallons 
with water, and boil in an iron kettle, or cook by steam in a barrel 
for forty-five minutes. Fill the vessel with water to the required 
50 gallons; strain the wash through a fine mesh strainer, and apply 
hot. 
This wash should be applied in the fall after the leaves have 
dropped, or in the spring before the buds open. Spray thoroughly, 
covering all parts of the tree. 
CONCENTRATED LiME SuLFUR: When stored away it is best 
to cover the solution with a layer of oil about an eighth of an inch 
thick. This will prevent evaporation, and the forming of a crust 
on the material. The material should not be stored where the tem- 
perature would go very low. 
In spraying with this mixture definite dilution must be made, 
and to do this a Baume scale is required. The amoun: of dilution 
will vary from one part of this concentrate in nine or ten parts of 
water to one part concentrate in thirty or more parts of water. 
This concentrated material is now on the market in a commercial 
form, and is generally very reliable. 
Formula: 
80 Pounds sulfur. 
40 Pounds best stone lime (95% calcium oxide). 
50 Gallons of water. 
The cost of making this material will depend on the amount 
that can be made at one time, and the cost of material and labor. 
The average cost is about $2 per barrel of 50 gallons. Usually it 
is not practicable to make as much as 50 gallons at one time, conse- 
quently the following directions are for making only 25 gallons. 
Live steam run in a barrel, or fire under an iron kettle may be used 
in boiling. 
Place five gallons of water and forty pounds of the sulfur in 
the vessel and apply heat until the sulfur becomes a smooth paste, 
