268 REPORT ON THE No. 24 



9. Kerosene Emulsion (for Bark-lice and Plant Lice). 



Hard soap ^ pound, or soft soap i quart. 



Boiling- water (soft) i gallon. 



Coal oil 2 g-allons. 



After dissolving the soap in water, add the coal oil and stir well for 5 or 

 10 minutes. When properly mixed, it will adhere to glass without oiliness. A 

 syringe or pump will aid much in this work. In using, dilute with from g to 15 

 parts of water. Kerosene emulsion may be prepared with sour milk (i gallon) 

 and coal oil (2 gallons), no soap being required. This will not keep long. 



10. Tobacco Decoction. 



Refuse tobacco 2 pounds. 



Water 5 gallons. 



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

 tion is obtained. Keep it covered until cool. It may then be used undiluted for 

 spraying infested plants. 



II. Whale Oil Soap. 



For Plant Lice, i pound in 7 gallons hot water. 



For San Jose Scale in winter. 2 pounds in i gallon hot water applied as the 

 buds are swelling. 



12. Lime Sulphur Mixture. 



Quick lime 20 pounds. 



Flowers of sulphur 15-20 



Water i barrel. 



To prepare, have 12-14 gallons of boiling water in the barrel or kettle, throw 

 in the lime and add the sulphur, which should preferably have been mixed pre- 

 viously into a paste with hot water. The whole mixture should then be boiled 

 until the characteristic green color is obtained. The time required varies with 

 the kind of lime used and may take from J to i\ or 2 hours. Dilute with hot 

 water to fill up the barrel and spray while warm. 



13. Wash for Borers. 



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

 paint, then add i 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. 



14. Lime Wash. 

 (For Oyster-shell Bark Lice, etc.) 



Slake i| pounds fresh lime in i gallon of water. Strain the wash before 

 spraying. To be applied during winter to trees infested with oyster-shell bark 

 lice. 



