BXTLIiETINS OF THE BTTREAU OF PLANT INDTTSTB-T. 



The work of the Bureau of Plant Industry, which was organized July 1, 1901, is 

 classified under the general subjects of Pathological Investigations, Physiological 

 Investigations, Taxonomic Investigations, Agronomic Investigations, Horticultural 

 Investigations, and Seed and Plant Introduction Investigations. All the scientific 

 and technical ])ublications of the Bureau are issued in a single series of bulletins, a 

 list of which follows. • 



Attention is directed to the fact that the publications in this series are '^ot for gen- 

 eral distribution. The Superintendent of Documents," Government Printing Office, 

 Washington, D. C, is authorized by law to sell them at cost, and to him all applica- 

 tions for these bulletins should be made, accompanied by a postal money order for 

 the required amount or by cash. 



No. 1. Relation of Lime and Magnesia to Plant Growth. 1901. Price, 10 cents. 



2. Spermatogenesis and Fecundation of Zamia. 1901. Price, 20 cents. 



/ 3. Macaroni Wheats. 1901. Price, 20 cents. 



4. Range Improvement in Arizona. 1902. Price, 10 cents. 



5. Seeds and Plants Imported. Inventory No. 9. 1902. Price, 10 cents. 



6. A List of American \'arieties of Peppers. 1902. Price, 10 cents. 

 • 7. The Algerian Durum Wheats. 190/. Price, 15 cents. 



8. A Collection of Fungi Prepared for Distribution. 1902. Price, 10 cents. 



9. The North American Species of Spartina. 1902. Price, 10 cents. 

 10. Records of Seed Distribution, etc. 1902. Price, 10 cents. 



,11. Johnson Grass. 1902. Price, 10 cents. 



12. Stock Ranges of Northwestern California. 1902. Price, 15 cents. 



13. Range Improvement in Central Texas. 1902. Price, 10 cents. 



14. Decay of Timber and IMethods of Preventing It. 1^02. Price, 55 cents. 



15. Forage Conditions on the Border of the Great Basin. 1902. Price, 15 cents. 



16. Germinationof the Spores of AgaricusCampestris, etc. 1902. Price, 10 cents. 



17. Some Diseases of the Cowpea. 1902. Price, 10 cents. 



18. Observations on the iMosaic Disease of Tobacco. 1902. Price, 15 cents. 



19. Kentucky Bkiegrass Seed. 1902. Price, 10 cents. 



20. INIanufacture of Semolina and Macaroni. 1902. Price, 15 cents. 



21. List of American Varieties of Vegetables. 1903. Price, 35 cents. 



22. Injurious Effects of Premature Pollination. 1902. Price, 10 cents. 



23. Berseem. 1 02. Price, 10 cents. 



24. Unfermented Grape Must. 1902. Price, 10 cents. 



25. Miscellaneous Papers: I. The Seeds of Rescue Grass and Chess. II. Sara- 



gnlla Wheat. III. Plant Introduction Notes from South Africa. IV. Con- 

 gressional Seed and Plant Distribution Circulars. 1903. Price, 15 cents. 

 2H. Spanish Ahnonds. 1902. Price, 15 cents. 



27. Letters on Agriculture in the West Indies, Spain, etc. 1£02. Price, 15 cents. 



28. The Mango in Porto Rico. 1903. Price, 15 cents. 



29. The Effect of Black Rot on Turnips. 1901 Price, 15 cents. 



30. Budding the Pecan. 1902. Price, 10 cents. 



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



32. A Di.«ease of th White Ash. 190<. Price, 10 cents. - 



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



34. Silkworm F(-od Plants. 1903. Price, 15 cents. 



35. Recent Foreign Explorations. 1903. Price, 15 cents. 



;-6. The "Bluing" of the Western Yellow Pine, etc. 1^03. Price, 30 cents. 



37. Formation of the Spores of the Sporangia of Rhizopus Nigricans and of Phyco- 



myces Nitens. 1903. Price, 15 cents. 



38. Forase Conditions in Eastern Washington, etc. 1903. Price, l^ cents. 

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



40. Cold Storage with Reference to the Pear and Peach. 1903. Price, 15 cents. 

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



42. Three New Plant Introductions from Japan. 1903. Price. 10 cents. 



43. Japanese Bamboos. 1 03. Price, 10 cents. 



44. The Bitter-Rot of Apples. 1903. Price, 15 cents. 



45. Physiological Role of Mineral Nutrients in Plants. 1903. Price, 5 cents. 

 4 \ Propagation of Tropical Fruit Trees, etc. 190;. Price, 10 cents. 



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



[Continued on page 3 of cover.] 



