40 PROTECTION OF PLAXTS, 1916-17 



dilute the slaked lime to half a barrel of water, and pour into the diluted 

 copper sulphate solution, then stir thoroughly. It is then ready for iise. 

 (Never mix concentrated milk of lime and copper solution.) 



A stock solution of copper sulphate and milk of lime may be prepared 

 and kept in separate covered barrels throughout the spraying season. The 

 quantities of copper sulphate, lime and water should be carefully noted. 

 Bordeaux mixture deteriorates with age and should be used as soon as made. 



To test Bordeaux mixture, let a drop of ferrocyanide of potassium 

 solution fall into the mixture when ready. If the mixture turns reddish- 

 brown, add more milk of lime until no change takes place. 



Poisoned Brax Mixture. (For Cutworms and Locusts.) 



Bran 20 lbs. Paris Green H lb. 



Molasses 1 quart Water 2 to 3 gallons 



Mix the bran and Paris green thoroughly in a wash tub, while dry. 

 Dissolve the molasses in the water and wet the bran and poison with the 

 same, stirring well so as to dampen the bran thoroughly. 



For cutworms a simple formula for small gardens is one quart of bran, 

 one teaspoonful of Paris green and one tablespoonful of molasses, with 

 sufficient water to moisten the bran. 



Shorts or middlings in place of bran are also useful for cutworm control. 

 For locusts excellent results, have been obtained with sawdust used as the 

 carrier for the poison. 



For Sucking Insects 



Kerosene Emulsion: 



Kerosene (coal oil) 2 gallons. 



Rain water 1 gallon 



Soap Y2 pound. 



Heat the water, cut the soap into fine shavings and add them to the 

 water, stirring till all is dissolved, then pour this into the kerosene and churn 

 the whole violently with a syringe or force pump for about five minutes or 

 until a thick creamy emulsion is produced. This makes the stock solution 

 which as it cools thickens into a jelly-like mass. When required for use 

 dilute with nine times its measure of warm water. The stock solution when 

 properly made will keep for months if kept from the air. 



