[Continued from pain- '2 of cover.] 



No. 21. List of American Varieties of Vegetables for flu- Years 1901 and 1902. 1903. 

 Price. 35 cents. 



22. Injurious Kffects of Premature Pollination. IDOL*. Price, 11) cents. 



23. Berseem: The Great Forage and Soiling Crop of the Nile Valley. 1902. 



Price, 1") cents. 



24. The Manufacture and Preservation of I'nfermented ({rape Must. 1902. 



Price, 10 cents. 



25. Miscellaneous Papers: I. The Seeds of Rescue < irass and ( Miess. II. Saragolla 



Wheat. HI. Plant Introduction Notes from South Africa. IV. Congres- 

 sional Seed and Plant Distribution Circulars, 1902-190:5. 190:5. Price, 15 

 cents. 



26. Spanish Almonds and Their Introduction into America. 1902. Price, 15 



cents. 



27. Letters on Agriculture in the West Indies, Spain, and the Orient. 1902. 



Price, 15 fenls. 



28. The Mango in Porto Rico. 190:5. Price, 15 cents. 



29. The Kffect of Hlack Hot on Turnips: A Series of Photomicrographs, Accom- 



panied by an Explanatory Text. 1903. Price, 15 cents. 

 :;o. Pudding the Pecan. 1902. Price, 10 cents. 



31. Cultivated Forage Crops of the Northwestern States. 1902. Price, 10 cents. 



32. A Disease of the White Asli Caused by Polyporus Fraxinophilus. 1903. 



Price, 10 cents. 



33. North American Species of Leptochloa. 1903. Price, 15 cents. 



34. Silkworm Food Plants: Cultivation and Propagation. 1903. Price, 15 



cents. 



35. Recent Foreign Explorations, as Bearing on the Agricultural Development 



of the Southern States. 1903. Price, 15 cents. 



3(>. The "Hluing" and the "Red Hot" of the Western Yellow Pine, with Spe- 

 cial Reference to the Black Hills Forest Reserve. 1903. Price, 30 cents. 



37. Formation of the Spores in the Sporangia of Rhizopus Nigricans and of Phy- 



comyces Nitens. 1903. Price, 15 cents. 



38. Forage Conditions and Problems in Eastern Washington, Eastern Oregon, 



Northeastern California, and Northwestern Nevada. 1903. Price, 15 

 cents. 



39. The Propagation of the Easter Lily from Seed. 1903. Price, 10 cents. 



40. Cold Storage, with Special Reference to the Pear and Peach. 1903. Price, 



15 cents. 



41. The Commercial Grading of Corn. 1903. Price, 10 cents. 



42. Three Xew Plant Introductions from Japan. Price, 10 cents. 



!.">. Japanese Ham boos and Their Introduction into America. 1903. Price, 10 

 cents. 



44. The Hitter Rot of Apples. 1903. Price, 15 cents. 



45. The Physiological Role of Mineral Nutrients in Plants. I 'rice, 5 cents. 



4i. The Propagation of Tropical Fruit Trees and Other Plants. Price, 10 cents. 



47. The Description of Wheat Varieties. 1903. Price, 10 cents. 



4S. The Apple in Cold Storage. 1903. Price, 15 cents. 



49. The Culture of the Central American Rubber Tree. 1903. Price, 25 cents. 



50. Wild Rice: Its l*ses and Propagation. 1903. Price, 10 cents. 



51. Miscellaneous Papers: Parti. The Wilt Disease of Tobacco and its Control. 



1903. Price, 5 cents. Part II. The Work of the Community Demonstra- 

 tion Farm at Terrell, Texas. 1904. Price, 5 cents. 



52. Wither-Tip and Other Diseases of Citrous Trees and Fruits Caused by Colle- 



totrichum (.Jlu-osporioides. 1904. Price, 15 cents. 



