100 INJURIOUS INSECTS OF 1903. 



For grasshoppers scatter the mash over the land where 

 the 'hoppers are thickest. (Col. Bill. 71, 1902.) See also 

 Criddle Mixture. 



4. Arsenite of Lime — 



Formula : 



White arsenic, i pound ; 

 Freshly burned lime, 2 pounds; 

 Water, i gallon. 



Boil together for 45 minutes. Keep the resulting 

 product in a tight vessel. 



One quart of this added to a barrel of water is used 

 against biting insects. However, in Oregon (Oregon Bui. 

 75, 1903), as well as in other states, it very often burns the 

 foliage. 



5. Arsenite of Soda — 



Formula : 



(Known as the "Kedzie" formula.) 



pjoil 2 pounds white arsenic and 8 pounds sal soda for 

 fifteen minutes in 2 gallons of rain water. Put in a jug 

 and label "Poison." When ready to spray slake 2 pounds 

 of lime and stir it into 40 gallons of water, adding a pint 

 of the mixture from the jug. 



The arsenic in this mixture is equivalent to 4 ounces of 

 Paris Green, and may be used whenever Paris Green is 

 recommended. This insecticide is used in preference to 

 the Arsenite of Lime, because in the Arsenite of Soda one 

 is sure of all the arsenic being combined to become in- 

 soluble in water, and thus there is no danger of burning 

 the foliage. Arsenite of Lime is cheaper, but Arsenite of 

 Soda is more reliable. 



6. Benzine — 



May be spra3^ed into cracks and crevices for bedbugs. 



7. Bisulfid of Carbon — (See Carbon Bisulfid.) 



