189 
Rules, Notes and Recipes 
again as soon as the blossom has fallen. Now and 
again a third or even fourth spraying may be 
necessary to kill caterpillars. It should be used 
as a fine spray, and the spraying should cease as 
soon as the leaves are seen to be dripping. 
Kerosene Emulsion (Stock Solution, 66 
Per Cent. Oil). — Is made after the following 
formula: Kerosene (coal oil, lamp oil), 2 gallons; ,, 
fish oil or laundry soap (or 1 quart soft soap), 
1/2 lb.; water, one gallon. First dissolve the soap 
in boiling water; then remove the vessel from the 
fire. Immediately add the kerosene, and thor- 
oughly agitate the mixture until a creamy solu- 
tion results. The stock emulsion may be more 
conveniently made by pouring the mixture into 
the tank of a spray pump and pumping the liquid 
through the nozzle back into the tank for some 
minutes.^ The stock solution, if well made, will 
keep for some months, and is to be diluted before 
u.se. To make a lO per cent, spray (the strength 
for trees in foliage) add to each 1 gallon of the 
stock solution about 5 2-3 gallons of water. For 
20 and 25 per cent, emulsions (for .use on dor- 
mant trees and plants) use, respectively, about 
2 1-3 and 1 2-3 gallons of water for each 1 gallon 
of stock emulsion. Agitate the mixture in all 
cases after adding the water. The preparation 
of the emulsion will be simplified by the use of 
a naphtha soap. No heat will be required, as the kerosene will combine. 
Lime- Sulphur Wash. — One formula is: Stone lime, 20 lbs.; sul- 
phur (flour or flowers), 15 lbs.; water to make 50 gallons. Heat in a 
cooking barrel or vessel about one-third of the 
total quantity of water required. When the 
water is hot add all the lime and at once add all 
the sulphur, which previously should have been 
made into a thick paste with water. After the 
lime has slaked, about another third of the water 
should be added, preferably hot, and the cooking 
should be continued for one hour, when the final 
dilution may be made, using either hot or cold 
water, as is most convenient. The boiling due to 
the slaking of the lime thoroughly mixes the in- 
gredients at the start, but subsequent stirring is 
necessary if the wash is cooked by direct heat in 
kettles. If cooked by steam, no stirring will be 
necessary. After the wash has been prepared it 
must be well strained as it is being run into the 
spray tank. It may be cooked in large kettles, 
Gipsy Moth and Cater- or preferably by steam in barrels or tanks. This 
pillar and egg-cluster should be applied promptly after prepara- 
tr^t^Tn Mty^n1°Junl forniula, there is 
Spray with lead arsen- crystallization of the sulphur and hardenmg of the 
ate; band the trees sediment upon cooling. 
The Bagworm 
(Natural size) 
Described in Farmers’ 
Bull. 701. It is a bad 
pest as a tree defoliator. 
Hand-pick the bugs in 
Winter or spray against 
the attack of the larvae 
in Summer. 
