BULLETINS OF THE BUREAU OF PLANT INDUSTRY OF THE UNIT 

 STATES DEPARTMENT OF AGRICULTURE. 



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

 Vegetable Pathological and Pliysiological 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, 

 Tea, and Poisonous Plant Investigations; the Seed Laboratory; 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 series 

 follows. 



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

 lications of the United States Department of Agriculture are not for general 

 distribution. All copies not required for ot^cial 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 Super- 

 intendent of Documents, Government Printing Office, Washington, D. C, 

 accompanied by a postal money order for the required amount or by cash. 

 Stamps and personal checks will not be accepted in payment for publications. 



No. 1. The Relation of Lime and Magnesia to Plant Growth. 1901. Price, 10 

 cents. 

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



4 J. Vt?""''^^' ^^ cents. 



*5/ '% Vitality and Germination of Seeds. 1904. Price, 10 cents. 

 0^ * ture. Meadow, and Forage Crops in Nebraska. 1904. Price, 10 

 ■x-7'i? ;ents. 



^ Soft Rot of the Calla Lily. 1904. Price, 10 cents. 

 *? le Avocado in Florida. 1904. Price, 5 cents. 

 u otes on Egyptian Agriculture. 1904. Price, 10 cents. 

 ^ nvestigations of Rusts. 1904. Price, 10 cents. 



J A Method of Destroying or Preventing the Gr 'wth of Algse and Certain 

 Pathogenic Bacteria in Water Supplies. 1904. Price, 5 cents. 

 Reclamation of Cape Cod Sand Dunes. 1904. Price, 10 cents. 

 Seeds and Plants Imported During the Period from September, 1900, to 

 December, 1903. Inventory No. 10. 1905. Price, 20 cents. 

 I? /. Range Investigations in Arizona. 1904. Price, 15 cents. 

 j 8. North American Species of Agrostis. 1905. Price, 10 cents. 

 }; >9. American Varieties of Lettuce. 1904. Price, 15 cents. 



70. The Commercial Status of Durum Wheat. 1904. Price, 10 cents. 



71. Soil Inoculation for Legumes. 1905. Price, 15 cents. 



72. Miscellaneous Papers: I. Cultivation of Wheat in Permanent Alfalfa 

 Fields. II. The Salt Water Limits of Wild Rice. III. Extermina- 

 tion of Johnson Grass. IV. Inoculation of Soil with Nitrogen-Fixing 

 Bacteria. 1905. Price, 5 cents. 



73. The Development of Single-Germ Beet Seed. 1905. Price, 10 cents. 



74. The Prickly Pear and Other Cacti as Food for Stock. 1905. Price, 5 

 cents. 



75. Range Management in the State of Washington. 1905. Price, 5 cents. 



76. Copper as an Algicide and Disinfectant in Water Supplies. 1905. 

 Price, 5 cents. 



77. The Avocado, a Salad Fruit from the Tropics. 1905. Price, 5 cents. 



78. Improving the Quality of Wheat. [In press.] 



79. The Variability of Wheat Varieties in Resistance to Toxic Salts. 1905. 

 Price, 5 cents. 



80. Agricultural Explorations in Algeria. 1905. Price, 10 cents. 



81. Evolution of Cellular Structures. 1905. Price, 5 cents. 



82. Grass Lands of the South Alaska Coast. 1905. Price, 10 cents. 



83. The Vitality of Buried Seeds. 1905. Price, 5 cents. 



84. The Seeds of the Bluegrasses. [In press.] 



jl'^ASHiNGTON, D. C, Sejjtemher 8, 1905. 



