BULLETINS OF THE BUREAU OF PLANT INDUSTRY. 



The scientific and technical publications of the 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 publications 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 applications for these 

 bulletins should be made, accompanied by a postal money order for the required amount 

 or by cash. 



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

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

 . . 3. Macaroni WJieats. ISOl. _ Pric.e. 20 cents. ■ - • 



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



5. Seeds and Plants Iniported. 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. I'rice. 15 cents. 



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



9. The North American Species of Spartina.- 19tv2. ■ Price. 10 cents. 



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



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



12. Stoclj 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, 55 cents. 



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



16. Germination of the Spores of Agaricus Campestris, etc. 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. I'rice, 10 cents. 



23. Berseem. 1902. Price, 10 cents. 



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



25. Miscellaneous Papers. 1903. Price, 15 cents. 



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



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



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



29. The Effect of Blaclt-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. Iff03. Price, 15 cents. 



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



36. The " Bluing " of the Western Yellow Pine, etc. 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 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 I'ear and Peach. 1903. Price, 15 cents. 



41. The Coqimercial 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. Physiological Role of Mineral Nutrients in Plants. 1903. Price. 5 cents. 



46. Propagation of Tropical Fruit Trees, etc. 1903. Price, 10 cents. 



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



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



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



50. Wild Rice: Its Uses and Propagation. 1903.. I'rice, 10 cents. 



51. Miscellaneous Papers. 1905. Price, 5 cents. 



[Continued on page 3 of cover.] 

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