APPENDIX 255 



sour milk may be used with 2 gal. of kerosene. Dilute as 

 before. Spray. 



Use for plant lice and all other kinds of soft-bodied 

 sucking insects. 



Formalin. See page 58. 



A. One-half pint of formalin (formaldehyde) with 15 gal. 

 of water. B. One pint of formalin with 50 gal. of water. 



Use for: A. Potato scab, Soak the seed potatoes two 

 hours in this solution before planting. B. Smut on grain. 

 Soak the grain used for seed in this solution from one to two 

 hours before planting. 



Hellebore. See page 156. 



This preparation is not poisonous to man, so it may be used 

 in place of Paris green when it is applied to parts of the plant 

 that are to be eaten. It may be dusted on the plant, or i oz. 

 of hellebore may be mixed with 2 gal. of water and sprayed on 

 the plants. 



Use for currant worm, rose slugs, and other sawfly larvae. 



Common Soap. See page 56. 



i Ib. common soap. 

 8 gal. water. 



Spray upon foliage. 



Use for red spider, plant lice, and other sucking insects.' 



Carbon Bisulphide. Gophers may be killed with the 

 fumes of carbon disulphide. Soak cotton with the liquid, 

 put it in the gopher hole, and plug it up tight to keep in 

 the fumes. 



Ant hills may be destroyed by pouring the liquid into 

 holes made by a stick thrust into the hill. The hill should 

 then be covered with a wet blanket to keep in the fumes 

 and allowed to remain for twenty-four hours. 



