68 INSECT A 



Contact insecticides. 

 Kerosene emulsion: 

 Soap, I pound. 

 Kerosene, 2 gal. 

 Rain water, 1 gal. 

 Shave the soap and dissolve it by boiling in water. Pour 

 the soap solution, while boiling hot, into the kerosene and churn 

 vigorously by pumping the liquid back and forth with a force 

 pump until it looks like buttermilk. Keep this stock solution 

 tightly sealed. Before using dilute with from ten to twenty 

 parts of water. 



Nicotin sulphate or blackleaf 40: 

 Blackleaf 40, | pt. 

 Soap, 3 lbs. 

 Water, 100 gal. 

 This solution will be found valuable for spraying plant lice 

 or other soft-bodied insects. The soap may be omitted and then 

 the spray may be used with lime sulphur or with Bordeaux 

 mixture. 



Insecticides for biting insects. 

 Paris green: 



Paris green, 1 lb. 

 Quick lime, 2 lbs. 

 Water, 100 to 300 gal. 

 Paris green may be combined with Bordeaux mixture, but 

 never with lime sulphur. It should never be used on peach 

 foliage. Paris green may be applied also as a dust, mixing one 

 pound of poison to twenty pounds of cheap flour. 

 Arsenate of lead: 



Arsenate of lead, 2 lbs. 

 Water, 50 gal. 

 In spraying for Curculio on apple or plum, just after the 

 blossoms fall, use three pounds to fifty gallons of water. 

 Hellebore : 



Hellebore, 1 lb. 

 Water, 25 gal. 

 This spray is especially useful when the fruit — cherry, 

 gooseberry, or currant — is ripening, since it soon loses its poi- 



