270 ELEMENTS OF AGRICULTURE 



Shake the mixture which proves best and allow it to settle again, 

 making note of the time required. Compare this with the time that it 

 took the first mixture to settle. Would it be desirable to use old Bor- 

 deaux mixture? 



How much of the above stock solution of copper sulfate would be 

 required to make one gallon of a 2 : 2 : 50 (2 pounds copper sulfate, 

 2 pounds lime, 50 gallons water) spray? Fifty gallons of a 4 : 4 : 50 

 spray? 



COLLATERAL READING 



Farmers' Bulletins Nos.: 



28. Weeds, and How to Kill Them. 

 279. A Method of Eradicating Johnson Grass. 

 188. Weeds Used in Medicine. 

 334. Vitality of Weed Seeds in Manure, p. 18. 

 Weed Seeds in Feeding Stuffs, pp. 18, 19. 

 345. Some Common Disinfectants. 



243. Fungicides and Their use in Preventing Diseases of Fruits 

 305. Injury by Bordeaux Mixture, pp. 12, 13. 



127. Important Insecticides. 



227. Lime, Sulfur and Salt Wash, pp. 19-22. 



281. Soluble Oils for the San Jose Scale, pp. 17, 18.. 



329. Preparation of Soluble Oils, pp. 26-28. 



244. Fumigation of Nursery Stock, p. 11. 

 259. Disease-Resistant Crops, pp. 15, 16. 

 237. Apple-growing in New York, pp. 8-11. 

 267. Apple Bitter Rot, pp. 21-23. 



283. Spraying for Apple Diseases and the Codling Moth in the 



Ozarks. 



91. Potato Diseases and Treatment. 

 316. Potato Scab, pp. 11, 12. 

 320. Potato Spraying, pp. 22, 23. 

 219. Lessons from the Grain Rust Epidemic of 1904. 

 250. The Prevention of Wheat Smut and Loose Smut of Oats. 

 132. Insect Enemies of Growing Wheat. 

 231. Spraying for Cucumber and Melon Diseases. 

 223. Miscellaneous Cotton Insects in Texas. 

 290. The Cotton Bollworm. 

 344. The Boll Weevil Problem. 

 333. Cotton Wilt. 



