166 STATE HORTICULTURAL SOCIETY. 



Oue quart of this solution is equal to % pound of Paris green. For 

 most spraying one quart in 50 gallons of water (with some lime) or Bor- 

 deaux mixture will be sufficient. 



CONTACT INSECTICIDES, FOR INSECTS THAT SUCK. 



KEROSENE EMULSION. 



Place two gallons of ordinary kerosene in a warm place, either in 

 a warm room or in the sun, and allow to become as warm as possible 

 without danger from fire. Boil one pound of laundry soap or whale oil 

 soap in a gallon of soft water until completely dissolved. Remove the 

 soap solution from the fire, and while still boiling hot, add the kerosene 

 and agitate vigorously for ten minutes, or until the oil is emulsified, 

 with a spraying pump by forcing the liquid back into the vessel from 

 which it was pumped. When the liquid is perfectly emulsified it will 

 appear creamy in color and will flow evenly down the side of the vessel 

 when allowed to do so. Care should be taken to completely emulsify the 

 oil and this is accomplished much more easily when the mixture is hot. 



This strong emulsion may now be readily diluted with water and used, 

 or it may be stored away for future use. When cold it becomes like 

 sour milk in appearance and should be dissolved in three or four times 

 its bulk of hot water before diluting with cold water. If the water 

 is at all hard, "break" it by adding a little sal soda before putting in the 

 soap. 



Small amounts of this emulsion may be made by using the ingredients 

 in small quantities, but in the same relative proportion.. It is used at 

 the rate of eight or ten parts of water to one part of emulsion. 



HELLEBORE. 



White hellebore is the powdered root of a plant. It kills both by 

 contact and as an internal poison. It may be applied either dry or in 

 the form of a liquid. When used dry it should be mixed with three or 

 four times its weight of flour or of plaster and then dusted on the in- 

 sects. Applied wet, one pound should be mixed with twenty-five gallons 

 of water and this liquid applied as a spray. 



INSECT POWDER, BUHACH., PYRETHRUM. 



This valuable remedy has one drawback, its cost. It is too expensive 

 for use on a large scale. It kills insects through their breathing pores, 

 but is harmless to man and beast. It will kill many of the insects of 

 the garden if dusted on or applied as a spray at the rate of one ounce 

 to two gallons of water. 



Use the powder when it is undesirable to use poison, but never buy 

 any unless it comes in tightly sealed packages. It loses its strength on 

 short exposure to the air. An hour will suffice to weaken it. It must 

 be applied from time to time, as it quickly loses its strength. 



