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emulsion is formed ; the rest of the water is then added, stirring all the 

 time. Formula II : — Petroleum, 1| pints ; lysol, 5 oz. ; water, 

 4 gals. The petroleum (paraffin) and lysol are mixed together, and 

 the water is then added. This emulsion will keep for a long time. 

 These formulae are used against Coccids, Aphids, Thrips, red-spider, 

 or any insect which requires an insecticide that kills on contact. 



Tobacco decoction : — Tobacco, or tobacco dust, 6 lb. ; carbonate of 

 soda, 6 oz. ; w^ater, 20 gals. The water is poured into a 20 gals. 

 receptacle and raised to boiling point ; at this moment the tobacco 

 and carbonate of soda are added ; the mixture is boiled for | or f of an 

 hour and then strained through a piece of sacking. This hquid is used 

 against Aphids. 



Calcium polysulphide : — Sulphur, 10 lb. ; recently slaked and sifted 

 lime, 20 lb. ; water, 10 gals. The sulphur is mixed into a paste with a 

 little water, the lime is then added and a little more water to retain 

 the form of a paste ; 10 gallons of water are heated in an iron cauldron, 

 and when at boiling point, the paste of sulphur and lime is added- 

 The mixture is then boiled for from 45 minutes to an hour. When the 

 paste is put in the warm water, a certain quantity of sulphur comes to 

 the surface, and the whole appears yellow ; as it boils, the liquid 

 becomes|orange-coloured, and when it begins to turn brown, the opera- 

 tion is finished, and at this moment the froth on the top has a green 

 tinge. The cauldron should then be withdrawn from the fire and 

 allowed to stand for ten minutes until the sediment has settled ; it will 

 then be 14° or 15° Be. The liquid can be used at once or decanted and 

 kept, but before use, water should be added until 5° Be. is reached, when 

 the spray is ready for use. This is very effective against Coccids, and 

 should be applied as soon as the leaves have fallen. When badly 

 infested, the trees should be sprayed again in early spring, when the 

 buds begin to swell before bursting. It is also successful as a winter 

 treatment against Coccids, Aphids and similar insects. 



Sodium bisulphide : — Sulphur, 48 lb. ; caustic soda (98 per cent.),, 

 24 lb. ; water, 20 gals. In a receptacle of 20 gallons capacity, a paste 

 is made with the 48 lb. sulphur and a little water so that there is no 

 excessive heat. When all the sulphur and soda are dissolved, water is 

 added up to 20 gals. This is the concentrated liquid, of which If lb. 

 should be dissolved in 5 gals, water. This has proved a very successful 

 treatment against red-spider on citrus. 



Paris green, for small caterpillars, is used as follows : — -Paris green, 

 6 oz. ; lime, 6 oz. ; water, 20 gals. The Paris green and lime are 

 mixed with a little water into a stiff paste, and the water then added. 

 Against Cydia pomonella and Eriocamjooides limacina, the mixture 

 should be : — Paris green, 4 oz. ; lime, 3 oz. ; water, 20 gals. Lead 

 arsenate as a spray : — Recently slaked and sifted lime, 1 j lb. ; lead 

 arsenate, 1 j lb. ; water, 20 gals. A good poison bait consists of : — 

 Bran, 30 lb. ; molasses, or raw sugar, 4 lb. ; Paris green, 2 lb. These 

 are well mixed and placed during the evening in small quantities at 

 intervals in the line of plants and at their foot. 



Carbon bisulphide is used at the rate of 14 oz. per ton of grain, or 

 1 lb. per 22 cubic yards of space, to kill weevils and Bruchids and other 

 insects that infest granaries and barns. For injection into the ground 

 to destroy various pests, such as Oniscus, Julus and Margarodes, it 

 can be used without danger to vegetation at the rate of 1 oz. per square 



