$4 The Horticulturist s Rule- Book. 



Eesin and fish-oil soap, continued. 



make 100 gallons. The caustic soda is first dissolved in 

 about 16 gallons of water, after which y z of the solution 

 is taken out and the resin added to that remaining in the 

 kettle. When all the resin is dissolved, the fish-oil is added 

 to it and the whole thoroughly stirred, after which the bal- 

 ance of the caustic soda solution is added very slowly and 

 boiled for about an hour, or until it will readily mix with 

 water. Use an iron kettle. For scale insects on orange 

 and olive. (Californian.) 



Resin and petroleum soap. Water, 100 gals. ; resin, 17 > 

 Ibs. ; soda (60 per cent.), 7 Ibs. ; fish-oil, 3 Ibs. ; petroleum, 

 2 Ibs. The resin, soda and fish-oil, with 20 gals, water, 

 are boiled together for four hours, when the kerosene is 

 added and the whole is thoroughly stirred. While hot, 

 place in a barrel and add the remaining 80 gals, water, and 

 emulsify by thorough stirring. For scale on citrus trees. 



Salt and lime wash. 25 pounds of lime (unslaked), 20 

 pounds of sulphur, 15 pounds of salt, 60 gallons of water. 

 To mix the above, take 10 pounds of lime, 20 pounds of 

 sulphur, and 20 gallons of water. Boil until the sulphur 

 is thoroughly dissolved. Take the remainder 15 pounds 

 of lime and 15 pounds of salt-slack, and add enough of 

 water to make the whole 60 gallons. Strain and spray on 

 the trees when milk-warm or somewhat warmer. This can 

 be applied when the foliage is off the tree, and will have 

 no injurious effects whatever on the fruit buds or the tree 

 itself. For scale on deciduous trees in winter. (Cali- 

 fornian.) 



Soap and arsenites. Yellow soap, 4 Ibs., which is dis- 

 solved in i gallon of hot water ; add 4 ounces of London 

 purple or Paris green, mix, and dilute with 50 gallons of 

 hot water. For plant lice. 



Soap and lime wash. 5 Ibs. potash, 5 Ibs. lard stirred in 

 5 gals, of boiling water ; i peck quicklime slaked in 5 gals. 

 of boiling water, and mixed while hot with the potash and 



