BULLETINS OF THE BUREAU OF PLANT INDUSTRY. 



The Bureau of Plant Industry-; which waslOrganized July 1, 19.01, includes Veger 

 tahle Pathological and Physiological Investigations, Botanical Investigations and 

 Experiments, Grass and Forage Plant Investigations, Pomplogical Investigations, 

 and Experimental Gardens and Grounds, all of which were formerly separate Divi- 

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

 mental Farm, Tea Culture Investigations, and 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, scientilic, and technical publica- 

 tions of the United States Department of Agriculture are notior 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." $11 appliqations for such 

 publications should, therefore, be made to The Superintendent of Documents, 

 Union Building, Washington, D. C. 



No. 1. The Relation of Lime and Magnesia to Plant Growth. 1. Liming Of Soils 

 from a Physiological Standpoint. II. Experimental Study of the Relation 

 of Lime and Magnesia to Plant Orowth. 19,01. Price, 10 cents. 



2. Spermatogenesis and Fecundation i >f Zamia. 11)01. Price, 20 cents. 



o. Macaroni "Wheats. 1901. Price, 20 cents. 



4. Range Improvement in Arizona. (Cooperative Experiments with the Ari- 



zona Experiment Station. ) 1902. Price, 10 cents. 



5. Seeds and Plants Imported Through the Section of Seed and Plant Intro- 



duction for Distribution in Cooperation with the Agricultural Experiment 

 Stations. Inventory No. 9, Nos. 435 ! -5.300. 1902. Price, 10 cents. 



6. A List of American Varieties of Peppers. 1902. Price, 10 cent-. 



7. The Algerian Durum Wheats: A Classified List, with Description* 1"02. 



Price, 15 cents. 



8. A Collection of Economic and Other Fungi Prepared for Distribution. 1002. 



Price, 10 cents. 

 0. The North American Si iccies of Spartina. 1902. Price, 10 cents. 



10. Records of Seed Distribution and Cooperative Experiments with < irassc and 



Forage Plants. 1902. Price, 10 cents. 



11. Johnson Orass: Report of Investigations Made During the Season of 1001. 



1902. Price, 10 cents. 



12. Stock Ranges of Northwestern California: Notes on the < basses ami Forage 

 , Plants and Range Conditions. 1902. Price, 15 cents. 



I.'!. Experiments and Range Improvements in Central Texas. 1002. Price', 10 

 cents. 



14. The Decay of Timber anil Methods of Preventing It. 1902. Price, 55 cents. 



15. Forage Conditions on the Northern Border of the (beat Basin, Being a 



Report upon Investigations made during July and August, 1001. in the 



Region between Winnemucca, Nevada, and Ontario, Oregon. 1902. 



Price, 15 cents. , 



Hi. A Preliminary Study of the (lerminatioh of the Spores of Agarieus Campes- 



tris and Other Pasidiomycetous Fungi. 1001'. Price, 10 cents. 

 17. Some Diseases of the Cowpea: I. The Wilt Disease of the Cow pea and Its 



Control. 11. A Cowpea Resistant to Root Knot ( Ileterodera Radicicola). 



1902. Price, 10 cents. 

 is f Miservations on the Mosaic Disease of Tobacco. 1002. Price, 15 cents. 



19. Kentucky Bluegrass Seed: 1 larvesting, Curing, and Cleaning. 1002. Price. 



10 cents. 



20. Manufacture of Semolina and Macaroni. 1902. Price, 15 cents. 



21. List of American Varieties of Vegetables for the Years 1901 and 1902. 1903. 



Price, 85 cents. 



[Continued on p. $ of cover.] 



