BULLETINS OF THE BUREAU OF PLANT INDUSTRY. 



The Bureau of Plant Industry, which was organized July 1. 1901, includes 

 Vegetable Pathological and Physiological Investigations, Botanical Investiga- 

 tions and Experiments. Grass and Forage Plant Investigations, Pomological 

 Investigations, and Experimental Gardens and Grounds, all of which were for- 

 merly separate Divisions, and also Seed and Plant Introduction and Distribu- 

 tion, the Arlington Experimental Far;u, Tea Culture Investigations, and Domestic 

 Sugar Investigations. 



Beginning with the date of organization of the Bureau, the several series of 

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

 as one series of the Bureau. A list of the bulletins, issued in the present series 

 follows. 



Attention is directed to the fact that " the serial, scientific, and technical 

 publications of the United States Department of Agriculture are not for general 

 distribution. All copies not required for official use are by law turned over to 

 the Superintendent of Documents, who is empowered to sell them at cost." All 

 applications for such publications should, therefore, be made to the Superin- 

 tendent of Documents, Government Printing OfBce, Washington, D. C. 



No. 1. The 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. 

 G. 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 and Cooperative Experiments with Grasses 



and Forage Plants. 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. The Decay of Timber and Methods of Preventing It. 1902. Price, 55 



cents. 



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



Price. 15 cents. 

 IG. A Preliminary Study of the Germination of the Spores of Agaricus Cam- 

 pestris and Other Basidiomycetous Fungi. 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. jNIanufacture 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, 15 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. 

 2G. Spanish Almonds. 1902. Price, 15 cents. 



27. Letters on Agriculture in the West Indies, Spain, and the Orient. 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. 190.3. Price. 10 cents. 

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



[Continued on page 3 of cover.] 



