BULLETINS OF THE BUREAU OF PLANT INDUSTRY. 



• 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 publications 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 not for gen- 

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

 Washington, D. O, 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 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, 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 Methods of Preventing It. 1902. Price, 55 cents. 



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



16. Germination of 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. Price, 10 cents. 



23. Berseem. 1902. Price, 10 cents. 



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



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



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

 sional Seed and E^lant Distribution Circulars. 1903. Price, 15 cents. 



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



27. 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 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" 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 ce'nts. 



40. Cold Storage, with Reference to 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. Physiological R61e of Mineral Nutrients in Plants. 1903. Price, 5 cents. 



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



[Continued on page 3 of cover.] 



