DESTRUCTIVE REMEDIES
4.—Hand-picking is usually very effective, and if performed as follows, not very disagreeable: Fasten a small tin can securely to a wooden handle and fill one-third full of water and kerosene; make a small wooden paddle, with one straight edge and a rather sharp point; by using this in the right hand and the pan in the left, the bugs may be quickly knocked off. Be sure to destroy all eggs when hand-picking is used.
5.—Kerosene emulsion is used in varying strengths; for method of preparing, see Chapter XVII.
6 and 7.—For use of whale-oil soap and miscible oils, see Chapter XVII.
8.—Tobacco dust:—This article varies greatly. Most sorts are next to worthless, but a few of the brands especially prepared for this work (and sold usually at $3 per hundred pounds, which will last two ordinary home gardens a whole season) are very convenient to use, and effective. Apply with a duster, like that described in Implements.
9.—Carbolic acid emulsion:—1 pint crude acid, 1 lb. soap and 1 gal. water. Dissolve the soap in hot water, add balance of water and pump into an emulsion, as described for kerosene emulsion.
10.—Corrosive sublimate is used to destroy scab on potatoes for seed by dissolving 1 oz. in 7 gals, of water. The same result is obtained by soaking for thirty minutes in a solution of commercial formalin, at the rate of 1 gill to 15 gals. of water.
11.—Bordeaux mixture:—See Chapter XVII.