APPENDIX I 679 



Hard laundry soap (shaved fine), ^^ pound. 

 Water, i gallon. 



Kerosene, 2 gallons. 



Dissolve the soap in boiling water, remove from the stove, and immediately add 

 the kerosene; churn with a bucket pump until a soft, butter-like, clabbered mass is 

 obtained. One part of this stock is added to 10 to 12 of soft water. If the stock 

 solution is properly made this can be used on tender foliage of plants for such insects 

 as plant-lice, etc. 



Lime Sulphur. — See ante. 



Miscible oils are those that will mix with water. There are several oils on the 

 market that are miscible in water. These make a good winter spray for scales and 

 are also excellent summer sprays against the same insects. Great care, however, 

 must be taken to get the right dilution, or burning of the leaves will result. 



Paris Green is used by many where an arsenical insecticide is necessary. It is 

 generally used at the rate of i pound to 50 gallons of spray. In using, always first 

 make a paste of the Paris green and water, and then add to the spray material. 



Pyrethrum, or Insect Powder (Persian insect powder, Dalmatian powder, or 

 Buhach). — This is a powder from the ground-up flowers of the pyrethrum plant. 

 •It is a contact insecticide and is used against fleas, cockroaches, etc. If the powder 

 is burned in a room the fumes will destroy mosquitoes and flies. 



Resin Lime Mixture. — Used with a fungicide, or insecticide, to insure sticking 

 of poisonous material to smooth, glossy leaves. 



Pulverized resin, 5 pounds. 



Concentrated lye, i pound. 



Fish, or other animal oil, i pint. 

 Water, 5 gallons. 



Place the oil, the resin and i gallon of water in an iron kettle and heat until the 

 resin softens; then add the lye and stir thoroughly. Add to this 4 gallons of hot 

 water, and boil until a little mixed with cold water gives a clear, amber-colored 

 liquid. Add water to make up to 5 gallons. This is a stock solution. In spraying 

 with Paris Green, or Bordeaux mixture, take 2 gallons of this mixture, dilute it to 

 10 gallons, and add 40 gallons of spray. 



Soap. — Ordinary soap is a valuable contact insecticide. 

 Ivory soap, i pound. 

 Water, 14 gallons. 



Boil the soap in 5 to 6 gallons of water until dissolved, dilute with water to 14 

 gallons and spray while still warm. It is recommended for plant-lice, red spiders, etc. 

 Sulphur. — Flowers of sulphur is often dusted on ornamental plants to prevent 

 such diseases, as powdery mildews, and spots, 2 parts of sulphur and i part of 

 air-slaked lime. 



Tobacco is a very important contact insecticide. As a powder it is one of the best 

 remedies for root-lice on trees. As a decoction it may be used as a spray against 

 plant-lice. Tobacco smoke kills soft-bodied insects. 



Whale Oil Soap (Fish-oil Soap). — This is a commercial product, and is a good 

 contact insecticide, particularly for soft-bodied insects, like plant-lice. 



