Copper sulphate (bluestone) 4 to 5 lb. Lime (good, unslaked) 5 to 6 lb. Water 50 gal. Dissolve the copper sulphate (bluestone) in twenty-five gallons of water. Slake the lime slowly so as to get a smooth, thick cream. Never cover the lime with too much water. After thorough slaking add twenty-five gallons of water. When the lime and the bluestone have dissolved, pour the two liquids into a third vessel. Be sure that each stream mixes with the other before either enters the vessel. Strain through a coarse cloth. Mix fresh for each time. Use for molds and fungi generally. Apply in fine spray with a good nozzle. BORDEAUX-PARIS-GREEN MIXTURE Ordinary Bordeaux mixture 50 gal. Paris green 4 oz. to 2 lb. Use for both fungi and insects on apple, potato, etc. BORDEAUX-ARSENATE-OF-LEAD MIXTURE Ordinary Bordeaux mixture 50 gal. Arsenate of lead 2 to 3 lb. Used for fungous and insect enemies of the potato, and of the apple when bitter rot is troublesome. COMMERCIAL LIME-SULPHUR ARSENATE OF LEAD Commercial lime-sulphur 1-1/2 gal. Arsenate of lead 2 to 3 lb. Water 50 gal. Use for spraying apples. AMMONIACAL COPPER CARBONATE Copper carbonate 5 oz. Ammonia (26 deg. Baume) about 3 pt. Water 50 gal. Dissolve the copper carbonate in the smallest possible amount of ammonia. This solution may be kept in stock and diluted to the proper strength as needed. Use this instead of the Bordeaux mixture after the fruit has reached half or two thirds of the mature size. It leaves no spots as does the lime-sulphur wash or the Bordeaux mixture. SPRAYS FOR BOTH FUNGOUS AND INSECT PESTS HOME-MADE LIME-SULPHUR WASH Lime 20 lb. Sulphur 15 lb. Water 50 gal. The lime, the sulphur, and about half of the water required are boiled together for forty-five minutes in a kettle over a fire, or in a barrel or other suitable tank by steam, strained, and then diluted to 50 gallons. This is the wash regularly used against the San Jose scale. It may be substituted for Bordeaux mixture when spraying trees in the dormant state. Commercial lime-sulphur may also be used in place of this homemade wash. Use one gallon of the commercial lime-sulphur to nine gallons of water in the dormant season. SELF-BOILED LIME-SULPHUR WASH The self-boiled lime-sulphur wash is a combination of lime and sulphur boiled only by the heat of the slaking lime, and is used chiefly for summer spraying on peaches, plums, cherries, etc. as a substitute for the Bordeaux mixture. Lime 8 lb. Sulphur 6 to 8 lb. Water 50 gal.