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 scries of bulletins, a list of which follows. 



Attention is directed to the fact that the publications in this series are not (or general dis- 

 tribution. 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. 

 Postage stamps and personal checks will not be accepted in payment for publications. 



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. Piice, 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, 1.5 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 Te.xas. 1902. Price, 10 cents. 



1-1. 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 Campesti is, 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. Congressional 

 Seed and Plant Distribution Circulars. 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 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 of the Sporangia of Rhizopus Nigricans and of Phyco- 



myces Nitens. 1903. Price, 15 cents. 



38. Forage Conditions in Eastern Waslungton, 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. Puce, 10 cents. 



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



[Continued on page 3 of cover.] 



