KEMEinES FOR INSECTS AND FUNGI INJURING FKUITS. 65 



the crowu of the phint and the larger roots. A serious disease, 

 known as the leaf blight, also attacks the foliage at about the time 

 the fruit ripens, and when both of these agencies are at work it is a 

 ditlic'ult matter to get rid of the trouble. It is thought that Paris 

 green will destroy the crowu borer, and it is certain that the Bor- 

 deaux mixture will lessen the iujury caused by the blight, if not 

 wholl}' prevent it. 



An application of the combined mixture should be made as soon 

 as the leaves begin to increase in growth in the spring, and another 

 a little while before the l)lossoms open. Neither the Paris green 

 nor the Bordeaux mixture can be safely applied again uutil after 

 the fruit is gathered. By this time the crown borers have ceased 

 their work and only the latter need be used until August, when the 

 beetles again appear and Paris green must again be used. 



The cutting and burning of the leaves of the old strawberry bed 

 or their destruction by dilute sulphuric acid, as recommended by 

 some, is undoubtedly valuable, but the Bordeaux mixture is 

 thought more effectual. If one fears to use the Paris green, 

 hellebore may be used, as it is reported as being an effectual 

 remedy. 



Fungicide Formulae. — Bordeaux Mixture. Dissolve 6 lbs. of 

 sulphate of copper in 2 gallons of hot water ; slake 4 lbs. of fresh 

 lime in water enough to make a tliin lime wash ; when both are 

 cooled pour together, stirring thoroughly ; then dilute to 22 gallons 

 and it is ready to apph'. 



Ammoniacal Carbonate of Copper. Dissolve 3 oz. of precipi- 

 tated carbonate of copper in 1 quart of ammonia (strength 22° 

 Baum6), and dilute with 22 gallons of water. 



Eau Celeste. Dissolve 1 lb. of sulphate of copper in 25 gallons 

 of water. 



Modified Eau Celeste. 2 lbs. of sulphate of copper, 2i lbs. 

 of carbonate of soda, 1^ pints of ammonia (22°Baume), and 22 

 gallons of water. 



Kerosene Emulsion. 1 lb. of common soap dissolved in hot water, 

 1 gallon of kerosene ; stir or churn together until a smooth butter- 

 like substance is formed ; then dilute with 25 to 50 parts of water. 



Kerosene Paste. Mix kerosene with any fine, dry material or 

 pigment, forming a thin paste or paint ; apph" with a small brush. 



Insecticides. — In the discussion of insecticides I have men- 

 tioned only Paris green, from the fact that reports from all sources 

 5 



