No. 6 DIOPAKTMEN'I' 0\'' AUKICUL'IUKK 977 



HELLEBORE. 



May ha applied cilhcr as a powder or in water. If used as a pow 

 der it may advantageously be mixed with an eipial amount of flour, 

 which causes it to remain better on the leaves. For use with water 

 one ounce of fresh Helleboi-e is mixed with (luce gallons of water. 



INSECT POWDER. 



Insect powder is sometimes sold under the names of Pyrethruni 

 and Buhach. It may be applied as the dry powder, when the plant 

 is wet with dew. It may also be mixed with flour and used in that 

 way, or it may be used in an alcoholic solution as follows: 



Insect powder (by w^eight), 1 part. 



Alcohol (by Aveight), 4 parts. 



Put the two in a tight vessel and leave there for eight days, 

 shaking occasionally; then filter and spray over the plants. 



It should be remarked that Insect Powder is only of value when 

 fresh and of lull strength. T'nfortunately i( is difficult to obtain it 

 fresh, and much of it is so adulterated as to be practically worthless. 



LIME. 



Lime is often of much value as an insecticide, either as whitewash, 

 sometimes with enough Paris green added, to give it a slight green- 

 ish tinge, or as quick lime to be dusted onto the insects. When used 

 in the preparation of Paris green it is added to combine with the free 

 arsenic present, which would burn the leaves, if left uneombined. 



NORMAL OR 1.6 PER CENT. BORDEAUX MIXTURE. 



Copper sulphate (blue vitriol) 6 pounds. 



Quick lime (good stone lime), 4 pounds. 



Water, .50 gallons. 



Dissolve the copper sulphate by putting it in a bag of coarse cloth 

 and hanging this in a vessel containing 4 to 6 gallons of water. Use 

 an earthen or wooden vessel. After the copper sulphate is dissolved, 

 dilute with water to 25 gallons. Slake the lime and add 2.5 gallons 

 of water. Mix the two and keep thoioughly stirred while using. Tf 

 the mixture is to be used on peach foliage, it is advisable to add tw<i 

 pounds more of lime to the above formula. 



BORDEAUX MIXTURE AND PARIS GREEN. 



Mix 4 ounces of Paris green as prepar<»d above, with 5(1 gallons of 

 normal Bordeaux mixture. 

 62—6—1901 



