SPRAYS AND POISONS 



31 



The Pyrox mentioned in later pages is a compound 

 of Bordeaux with arsenates, giving protection from 

 in-sects and disease at the same time. 



Formula for Bordeaux Mixture. — It is possible 

 to make your own Bordeaux mixture at very little ex- 

 pense,-if you wish to do so. In a two-quart fruit jar, 



After Blight and Bugs 



The force pump is best for large patches. The boys can spray the whole 

 crop from this position, with three gallons of Bordeaux and lead arsenate. 



or some glass or crock holding two quarts of water, 

 suspend a half pound of copper sulphate. Tie the 

 copper sulphate in a piece of cloth and suspend it 

 from a stick laid across the top of the full jar. In 

 another vessel put one half pound of quicklime; 

 add warm water till it is dissolved, and the mixture, 

 when stirred, is about as thick as cream. 



Pour the copper solution into a wooden or earthen 



