APPENDIX 291 



Year Book. 1897. Additional Notes on Seed Testing, pp. 441-452. 

 Year Book. 1898. Improvement of Plants by Selection, pp. 355-376. 

 Grass Seed and its Impurities, pp. 473-494. 



CHAPTER V 



Gray : Structural Botany, pp. 27-39 ^"^d 56-64. 

 Leavitt : Outlines of Botany, pp. 34-45 ; 58-60. 

 Ward : Disease in Plants. Chaps. V, VI, and VII. 

 Year Book of the United States Department of Agriculture. 1894. 

 Grasses as Sand and Soil Binders, pp. 421-436. 



CHAPTER VI 



Apgar: Trees of the Northern United States. Chaps. II, V, and VI. 

 American Book Company. 1892. 55 cents. 



Leavitt: Outlines of Botany, pp. 45-56; 212-226; 229-240. 



Pinchot: A Primer of Forestry. Bulletin No. 24. Division of Fores- 

 try : United States Department of Agriculture. 1899. 



Popular Science Monthly, September, 1901. Plants as Water Car- 

 riers. 



Popular Science Monthly, March, 1902. The Palm Trees of Brazil. 



Ward: The Oak. D. Appleton & Company. 1892. $1.00. 



Ward : Disease in Plants. Chaps. XXI, XXII, XXVI, XXIX. 



Ward : Timber and Some of its Diseases. The Macmillan Company. 

 1889. $1.75. 



Year Book. 1894. Forestry for Farmers, pp. 461-500. (Bulletin 67.) 



Year Book. 1895. Principles of Pruning and Care of Wounds in 

 Woody Plants, pp. 257-268. 



Year Book. 1898. Pruning of Trees and Other Plants, pp. 1 51-166. 



CHAPTER VII 



Gray: Structural Botany. Chap. V. 



Huntington : Studies of Trees in Winter. Knight & Millet, Boston. 



igoo. $2.25. 

 Leavitt: Outlines of Botany, pp. 23-33 and 138-143. 

 Lubbock: Buds and Stipules. D. Appleton & Company. $1.25. 

 Ruskin : Modern Painters. Chaps. Ill, VI, and VII. 



CHAPTER VIII 



Allen : Flowers and Their Pedigrees. D. Appleton & Company. $1.50. 

 Dana: Plants and Their Children, pp. 187-255. 



Darwin : Different porms of Flowers of the same Species. D. Appleton 

 & Company. $1.50. 



