BULLETINS OF THE BTJREAU OF PLANT INDUSTRY. 



The Bureau of Plant Industry, which was organized July 1, 1901, ineludee Vege- 

 table Pathological and Physiological Investigations, T'otanieal Investigations and 

 Kxi)erinients, (ira.'^.s and Forage Plant Investigations, Poniological Investigations, 

 and Gardens and (Grounds, all of which were formerly separate Dinsions, and also 

 Seed and Plant Introduction and Distribution, The Arlington Experimental Farm, 

 and Tea Investigations and Experiments. 



Beginning with the date of organization of the Bureau, the independent serie.-< of 

 bulletins of the several Divisions were discontinued, and all are now published As 

 one series of the Bureau. 



The bulletins issued in the present series are: 



Xi). 1. The Relation of Lirae and Magnesia to Plant (.rrowth. 1901. 

 '2. Spermatogenesis and Fecundation of Zamia. 1901.' 

 'A. Maciironi Wheats. 1901. '^ 



4. Range Improvement in Arizona. 1901. 

 r>. Seeds and Plants Imported through the vSection of See.<l and Plant Intrn- 



ductien. Inventory No, 9, Nos. 4351-5500. 1902. 

 6. A List of American Varieties of Peppers. 1902. 

 .-7. The Algerian Durum Wheats: A Classified List, with Descriptions. 1902. 



8. A Collection of Economic and Other Fungi Prepared for Distribution. 1902. 



9. The North American Species of Spartina. 1902. 



10. Records of Seed Distribution andr Cooperative Experiments with Grasses 

 and Forage Plants. 1902. ' - 



11: Johnson Grass: Report of Investigations Made During the Season of 

 1901. 1902. 



12. ."^tock Ranges of Northwestern California. 1902. 



13. Experiments in Range Improvement in Central Texas. 1902. 



14. The Decay of Timber and Methods of Preventing It. 1902. 



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

 Ifi. A Preliminary Stud}- of the Germination of the Spores of Agaricus Campes- 

 tris and Other Basidiomycetous Fungi. 1902. 



1 7. Some Diseases of the.Cowpea. 1902. 



18. Observations on the Mosaic Disease of Tobacco,, 1902. 



19. Kentucky Bluegrass Seed : Harvesting, Curing, and Cleaning. 1902. 



20. Manufacture of Semolina and Macaroni. 1902. " 



21. List of American Varieties of Vegetables. 1903. 



22. Injurious Effects of Premature ^pollination. 1902. 



23. Berseem: The Great Forage and Soiling Crop of the Nile Valley. 1902. 



24. The jManufacture and Preservation of L^nfermented Grape Must. 1902. 



25. Miscellaneous Papers. 1902. 



26. Spanish Almonds and Their Introduction into America. 1902. 



27. Letters on Agriculture in the West Indies, Spain, and the Orient. 1902. 



28. The Mango in Porto Rico. 1902. 



29. The Effect of Black Rot on Turnips. 1903. 



30. Budding the Pecan. 1902. 



31. Cultivated Forage Crops of the Northwestern States. 1902. 



32. A Disease of the White Ash Caused by Polypoi'us Fraxinophilus. 1903. 



33. North American Species of Leptochloa. 1903. 



34. Silkworm Food Plants. 1903. 



35. Recent Foreign Explorations, as Bearing on the, Agricultural Development 



of the Southern States. 1903. 



