BULLETINS OF THE BUREAU OF PLANT INDUSTRY. 



All the scientific and technical publications of tile Bureau of Plant Industry, which 

 was organized July 1, 1901, are issued in a single series of bulletins, a list of which 

 follows. 



Attention is directed to the fact that the pulalications in this series are not for general 

 distribution. The Superintendent of Documents, Government Printing Office, 

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

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

 required amount or by cash. 

 No. 1. The Relation of Lime and Magnesia to Plant Growth. 1901. Price, 10 ;cent^^. 



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 Varieties of Peppers. 1902. Price, 10 cents. > 



7. The Algerian Durum Wheats. 1902. 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 and Cooperative Experiments with Grasses and 



Forage Plants. ' 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. The Decay of Timber and Methods of Preventing It. 1902. Price, 15 cents. 



15. Forage Conditions on the Border of the Great Basin. 1902. Price, 55 cents. 

 10. A Preliminary Study of the Germination of the Spores of Agaricus Canipestris 



and Other Basidiomycetous Fungi. 1902. Price, 10 cents. 



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



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



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



20. Manufacture 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. 1902. Price, 15 cents. 



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



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



golla WTieat. III. Plant Introduction Notes from South Africa. IV. Con- 

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



26. Spanish Almonds. 1902. Price, 15 cents. 



27. Letters on Agiiculture in the West Indies, etc. 1902. Price, 15 cents. 



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



29. The Effect of Black Rot on Turnips. 1903. 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 Disease of the White Ash. 1903. Price, 10 cents. 



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



34. Silkworm Food Plants. 1903. Price, 15 cents. 



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



36. The "Bluing" and the "Red Rot" of the Pine. 1903. Price, 30 cents. 



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



comyces Nitens. 1903. Price, 15 cents. 



38. Forage Conditions in Eastern Washington, etc. 1903. Price, 15 cents. 



39. 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. 1903. Price, 10 cents. 



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



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



46. The Propagation of Tropical Fruit Trees and Other Plants. 1903. Price, 10 



cents. 



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



48. The Apple in Cold Storage. 1903. Price, 15 cents. 



[Continued on page 3 of cover.] 



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