BUIiLETINS 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, Taxonoiuic lyvestigations. Agronomic Investiga- 

 tions, Horticultural Investigations, and Seed and Plant Introduction Investiga- 

 tions. All the scientific and technical publications of the Bureau ai'e 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, t>. C, is authorized by law to sell them at cos5t, 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 per- 

 sonal checks will not be accepted in payment for publications. 

 No. 1. Relation of Lime and Magnesia to Plant Growth. 1001. 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 Xo. 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, 1.5 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 the Border of the Great Basin. 1902. Price, 15 



cents. 

 10. Germination of the Spores of xVgaricus 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 Wheaiit. III. Plant Introduction Notes from South Africa. 



IV. Congressionpl Seed and Plant Distriljution Circulars. 1903. 



Price. 15 cents. [ 

 20. Spanish Almonds. \ 1902. Price, 15 cents. 

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



cents. 

 2S. 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. Cultivjited Forage Crops of the Northwestern States. 1902. I'rice, 10 cents. 



32. A Disease of the AVhite Ash. 1903. Price. 10 cents. 



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



34. Silkworm Food I'lants. 1903. Price, 15 cents. 



35. Recent Foreign Explorations. 1903. Pric^e, 15 cents. 



30. The "Bluing" of the Western Yellow Pine. etc. 190.3. Price, 30 cents. 



37. Formation of the Spores in the Sporangia of Rhizopus Nigricans andof 



Phycomyces 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. I'rice, 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. 190.3. Price, 10 cents. 



[Continued on page 3 of cover.] 



