REFERENCE BOOKS 435 



Halligan : Fundamentals of Agriculture, chap. iv. D. C. Heath and 

 Company. 



Hunt: Cereals in America. Orange Judd Company. 



Hunt : Forage and Fiber Crops in America. Orange Judd Company. 



Sargent : Plants and their Uses. Henry Holt and Company. 



Spillman : Farm Grasses in the United States. Orange Judd Com- 

 pany. 



Stockberger : Drug Plants under Cultivation. Farmers' Bulletin 663, 

 U. S. Department of Agriculture. 



Stubbs and Purse: Sugar Cane. D. G. Purse, Savannah, Georgia. 



Toothaker: Commercial Raw Materials. Ginn and Company. 



CHAPTER XXI 



Beal : Michigan Weeds. Bulletin 267, Michigan Agricultural Experi- 

 ment Station. 



Blatchley : The Indiana Weed Book. The Nature Publishing Company, 

 Indianapolis, Indiana. 



Chesnut : Principal Poisonous Plants of the United States. U. S. De- 

 partment of Agriculture, Division of Botany, Bulletin 20. 



Chesnut : Thirty Poisonous Plants of the United States. Farmers' 

 Bulletin 86, U. S. Department of Agriculture. 



Clark and Fletcher : Farm Weeds of Canada. Government Printing 

 Bureau, Ottawa, Ontario. 



Cox: Weeds: How to Control Them. Farmers' Bulletin 660, U. S. 

 Department of Agriculture. 



Georgia : A Manual of Weeds. The Macmillan Company. 



Henkel: Weeds Used in Medicine. Farmers' Bulletin 188, U. S. De- 

 partment of Agriculture. 



Pammel : Manual of Poisonous Plants. L. H. Pammel, Ames, Iowa. 



Pammel : Weeds of Farm and Garden. Orange Judd Company. 



Shaw : Weeds and How to Eradicate Them. Webb Publishing Company. 



Weed: Farm Friends and Farm Foes. D. C. Heath and Company. 



CHAPTER XXII 



Bryant : Logging. John Wiley and Sons. 



Collins: Practical Tree Surgery. Year Book, U. S. Department of 



Agriculture, 1913. 

 Defebaugh : History of the Lumber Industry in America. The American 



Thresherman, Chicago. 



