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 

 (Tar-lens and Grounds, all of which were formerly independent 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 the organization of the Bureau, the independent series of bulletins of the 

 Division of Vegetable Pathology and Physiology, the last number of which was 29, 

 and also of each of the other divisions, were discontinued and all are now published 

 as one series of the Bureau. 



The bulletins published in this series are: » 



No. 1. The Relation of Lime and Magnesia to Plant Growth, 1M31. 

 -. Spermatogenesis and Fecundation of Zamia. 1901. * 



3. Macaroni Wheats. 1901. 



4. Ran^e Improvement in Arizona. 1901. 



5. Inventory No. 9. Seeds and Plants Imported, 4351-5500, 1901. 



6. A List of American Varieties of Peppers, 1901. 



7. The Algerian Durum Wheats: A Classified List, with Descriptions, 1901. 



