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 ; Farm Management, including Grass and Forage Plant Investigations ; 

 Pomological Investigations, and Experimental Gardens and Grounds, all of 

 which were formerly conducted as separate divisions ; and also Seed and Plant 

 Introduction and Distribution; the Arlington Experimental Farm; Investiga- 

 tions in the Agricultural Economy of Tropical and Subtropical Plants; Drug 

 and Poisonous Plant Investigations ; Tea Culture Investigations ; the Seed 

 Laboratory, and Diy Land Agriculture and Western Agricultural Extension. 



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 seiies 

 follows. 



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

 cations of the United States Department of Agriculture are not for general dis- 

 tribution. 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 Office, Washington, D. C. 



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 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. Decay of Timber and Methods of Preventing It. 1902. Price, 55 cents. 



15. Forage Conditions on the Great Basin. 1902. Price, 15 cents. 



1(3. 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. 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, 15 cents. 



24. Unfermented Grape Must. 3902. Price, 10 cents. 



25. Miscellaneous Papers: I. Seeds of Rescue Grass and Chess. II. Saragolla 



Wheat. III. Plant Introduction Notes from South Africa. IV. Con- 

 gressional Seed and Plant Distribution Circulars. 1903. Price. 15 cents. 

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



27. Letters on Agriculture in the West Indies, 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 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.- 



[Continued on page 3 of cover.] 



