BULLETINS OF THE BTJREATJ OF PLANT INDUSTRY. 



Tlie Bureau of Flant Industry, which was organi2ed July 1, 1901, includes Vt^e- 

 table Pathological arid Physiological Investigations, Botanical Investigations and 

 K>:i)ennients, Grass and Forage Plant Investigations, Pomological Investigations, 

 and Experimental (iardens and Grounds, all of which were fomierly separate Divi- 

 sions, and also Seed and Plant Introduction and Distribution, the Arlington Exper- 

 imental Farm, Tea Culture Investigations, arid Domestic Sugar Investigations. 



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

 tins 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 publica- 

 tions of the United States Department of Agriculture are not for general distribution. 

 All copies not required for ofRcial use are by law turned over to the Sui)erint«ndent 

 of Documents, who is empowered to sell them at cost." All applications for such 

 publications should, therefore, be made to the Superintendent of Documents, Gov- 

 ernment Printing Office, Washington, D. C. 



No. 1. The Relation of Lime and Magnesia to Plant (irowth. 1001. I'rice, 10 cents. 

 2. Spermatogenesis and Fecundation of Zamia. 1901. Price, 20 cents, 

 o. JMacaroni 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 Algeriari Durum Wheats. 1902. Price, 15 cents. 



8. A Collection of Fungi Prepared for Distribution. 1902. Price, 10 cents. 



9. The North American vSpei-ics oi Spartina. 1902. Price, 10 cents. 



10. Records of Seed Distril>ution and Cooperative Experiments with (irivsses-and 



Forage Plants. 1902. Price, 10 cents. 



11. Johnson Grass. 1902. Price, 10 cents. 



12. Stock Ranges of Northwestern California. 1902. Price, 15 cents. 



18. Experiments in ~ Range Imjirovement 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. 



16. A Preliminary Study of the Germination of the Spores of Agaricus Campes- 



tris and Other Basidiomycetous Fungi. 1902. Price, 10 cents. 



17. Some Diseases of the Cowpea. 1902. Price, 10 cents. 



18. Observations on the Mosaic Disease i»f Tobacco. 1902. Price, 15 cents. 



19. Kentucky Bluegrass Seed. 1902. Price, 10 cents. 



20. ]\Ianufacture of Semolina and Macaroni. 1902. Price, 15 cents. 

 2L List of American Varieties of Vegetables. 1903. Price, o5 cents. 



22. Injurious Effects of Premature Pollination. 1902. Price, 10 bents. 



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



Price, 15 cents. 



24. The ^Manufacture and Preservation of Unfermented Grape Must. 1902. 



Price, 10 cents. 



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



Wheat. III. Plant Introductit>n Notes from South .Africa. IV. Congres- 

 sional Seed and Plant Distribution Circulars, 1902-1903. 1903. Price, 

 15 cents. 

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



[Contiuued on 7)age 3 of cover.] 



