36 



a paste may be added after the lime has been slaked. Boil for an hour 

 and a half in a kettle or in a barrel with live steam. Make up to 40 gal- 

 lons ; strain into spray tank and apply while warm. 



Other lime-sulphur washes, made without the addition of external 

 heat, are being tested, but their effectiveness has not been definitely as- 

 certained. 



///. Kerosene Emulsion (^For Bark-Lice and Plant Lice). 



Hard soap i pound, or soft soap 1 quart. 



Boiling water (soft) 1 gallon. 



Coal oil 2 gallons. 



After dissolving the soap in the water, add the coal oil and stir well 

 for 5 to 10 minutes. When properly mixed, it will adhere to glass with- 

 out oiliness. A syringe or pump will aid much in this work. In using, 

 dilute with from 9 to 15 parts of water. Kerosene emulsion may be pre- 

 pared with sour milk (1 gallon), and coal oil (2 gallons), no soap being- 

 required. This will not keep long. 



IV. Tobacco Decoction. 



Refuse tobacco 2 pounds. 



Water o gallons. 



Boil the mixture for 30 minutes or more, until a dark brown tea- 

 colored solution is obtained. Keep it covered until cool. It may then be 

 xised undiluted for spraying infested plants. 



V. Whale Oil Soap. 



For Plant Lice. — 1 pound in 7 gallons hot water. 

 For San Jose Scale in Winter. — 2 pounds in 1 gallon hot water ap- 

 phed as the buds are swelling. 



VI. Crude Petroleum. 



LTndiluted crude petroleum may be used in late winter on apple trees 

 for the San Jose Scale, but the trees should be dry, and no part should be 

 ■sprayed more than once. 



VII. Wash for Borers. 



First, add soft soap to a saturated solution of washing soda to make 

 •a thick paint, then add 1 pint crude carbolic acid, and | pound Paris 

 •Green to 10 gallons of wash. 



To be applied to the trunks of apple trees in early June. 



