lo The Horticultiirisf s Rule- Book. 



Carbolized plaster. — Stir 1 pint of crude carbolic acid into 50 

 pounds of land-plaster. Or, quick lime may be slaked with 

 the acid. The powder is thrown over the tree when the dew 

 is on, as a remedy for the curculio. It should be applied 

 profusely. 



Glue and arsenites wash. — Common glue, 1 pound, soaked a few 

 hours in cold water and then dissolved in y^ gallon of hot 

 water ; add 1 ounce London purple or Paris green, stir well, 

 and add hot water till the mixture measures 2 gallons. For 

 preventing the attacks of borers. 



Hot water. — Submerge affected plants or branches in water at a 

 temperature of about 125°. For aphis. 



Kerosene. — In pure state, kerosene is used as an insecticide upon 

 many plants, with various results. It does not appear to 

 injure the coleus, rose, grape, peach and pea, but does injure 

 the potato, tomato and gooseberr^^, and other plants. 



Kerosene emulsion. — 1. Soft soap, 1 quart, or hard soap — pref- 

 erably whale-oil soap — % pound ; 2 quarts hot water ; 1 pint 

 kerosene. Stir until aU are permanently mixed, and then 

 dilute with water to one-half or one-third strength. A good 

 way to make the emulsion permanent is to pump the mix- 

 ture back into the receptacle several times. Makes a perma- 

 nent emulsion with either hard or soft water. 



2. Hard soap, ^ pound ; boiling water, 1 gaUon ; kerosene, 

 2 gallons. Churn or pump the ingredients vigorously 15 or 

 20 minut«s. Dilute ten times when using. This is the Hub- 

 bard or standard emulsion for scale of the orange. 



2 ounces balsam of fir added to the above appears to 

 increase its efficiency, and it causes it to adhere to foliage 

 better, y W^^ spirits of turpentine is sometimes added. 



3. Pyrethi'o-kerosene emulsion. In the place of pure 

 kerosene in the above emulsions, use a kerosene decoction 

 of pyrethrum, made by filtering 1 gallon of kerosene through 

 2)^ pounds of pyrethrum. Valuable. 



Kerosene and milk emulsion.— Sour milk, 1 gallon; kerosene oil, 

 2 gallons ; warm to a blood heat and mix thoroughly. Dilute 

 10 times with water. For scale insects and plant-lice. 



Kerosene and condensed milk emulsion. — Kerosene, 2 gallons, or 

 64 per cent, of the entire mixture ; condensed milk, 4 cans of 

 % pint, or 123^ per cent. ; water twice the quantity of milk, 

 or 25 per cent. 



