BULLETINS OF THE BUREAU OF PLANT INDUSTRY. 



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

 table Pathological and Physiological Investigations, Botanical Investigations and 

 Experiments, Grass and Forage Plant Investigations, PomolOgical Investigations, and 

 Gardens and Grounds, all of which were formerly separate divisions, and also Seed 

 and Plant Introduction, The Arlington Experimental Farm, Tea Investigations and 

 Experiments, and the Congressional Seed Distribution. Beginning with the date of 

 organization of the Bureau, the independent series of bulletins of each division was 

 discontinued, and all are now published as one series of the Bureau. 

 The bulletins published in the Bureau series are: 

 No. 1. The Belation of Lime and Magnesia to Plant Growth. 1901. 



2. Spermatogenesis and Fecundation of Zamia. 1901. 



3. Macaroni Wheats. 1901. 



4. Range Improvement in Arizona. 1901. 



5. Seeds and Plants Imported through the Section of Seed and Plant Introduc- 



tion, etc. Inventory No. 9. 1902. 



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



7. The Algerian Durum Wheats. 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 and Cooperative Experiments with Grasses 



and Forage Plants. 1902. 



11. Johnson Grass: Report of Investigations Made during the Season of 1901. 



1902. 



12. Forage in Northwestern California. 1902. 



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

 11. The Decay of Timber and Methods of Preventing it. 1902. 



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



16. A Preliminary Study of Agaricus campestris and other Basidiomycetous 



Fungi. 1902. 



17. Diseases of the Cowpea. 1902. 



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



