BTJIiLETINS 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, Taxonoinic 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 aeries 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. 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 bv 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 Xist of American Varieties of-iPeppers. 1902. Price, 10 cents. 



7. The Algerian Durum Wheats. 1902. Price, 15 cents. 



8. A Collection of Finigi 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 ( ireat Basin. 1902. Price, 15 cents. 



16. Germination of Sprtres 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 Bhiegras* Seed. 1902. Price, 10 cents. / . 



20. Manufacture of Seniolina and ISIacaroni. 1902. Price, 15 cents. 



21. I/ist of American Viirieties of Vegetables. 1903. Price, 35 cents. 



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



23. Berseem. 1902. rtice, 10 cents. 



24. [Jnfermented Grap^ Must. 1902. Price, 10 cents. 



25. Miscellaneous Pa peif: I. The Seeds of Rescue Grass and Chess. II. SaragoUa 



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

 sional Seed and Pfant Distribution Circulars. 1903. Price, 15 cents. 



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



27. Agriculture in the Tyest 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. 5 1902. Price, 10 cents. 



31. Cultivated Forage C^ops 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- 



comyees Nitens. 1903. Price, 15 cents. 



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



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



40. Cold Storage, w ith 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 Role 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.] 



