BULLETINS OF THE BUREAU OF PLANT INDUSTRY.

The scientific and technical publications of the Bureau of Plant Industry, which was organized July 1, 1901, are issued in a single series of bulletins, a list of which follows.

The

Attention is directed to the fact that the publications in this series are not for general distribution. Superintendent of Documents, Government Printing Office, Washington, D. C., is authorized by law to sell them at cost, and to him all applications for these bulletins should be made, accompanied by a postal money order for the required amount or by cash. Numbers omitted from this list can not be furnished. No. 1. The Relation of Lime and Magnesia to Plant Growth. 1901. Price, 10 cents.

1901.

Price, 20 cents.

2. Spermatogenesis and Fecundation of Zamia.
3. Macaroni Wheats. 1901. Price, 20 cents.
4. Range Improvement in Arizona. 1901. Price, 10 cents.
6. A List of American Varieties of Peppers. 1902. Price, 10 cents.
7. The Algerian Durum Wheats. 1902. Price, 15 cents.

9. The North American Species of Spartina. 1902. Price, 10 cents.
10. Records of Seed Distribution, etc. 1902. Price, 10 cents.

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

13. Range Improvement in Central Texas. 1902. Price, 10 cents.

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

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

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

24. Unfermented Grape Must. 1902. Price, 10 cents.

25. Miscellaneous Papers. 1903. Price, 15 cents.

27. Letters on Agriculture in the West Indies, Spain, etc. 1902. Price, 15 cents.

29. The Effect of Black-Rot on Turnips. 1903. Price, 15 cents.

31. Cultivated Forage Crops of the Northwestern States. 1902. Price, 10 cents.

32. A Disease of the White Ash. 1903. Price, 10 cents.

45. Physiological Rôle of Mineral Nutrients in Plants. 1903. Price, 5 cents.

47. The Description of Wheat Varieties. 1903. Price, 10 cents.

48. The Apple in Cold Storage. 1903. Price, 15 cents.

49. Culture of the Central American Rubber Tree. 1903. Price, 25 cents.

50. Wild Rice: Its Uses and Propagation. 1903. Price, 10 cents.

51. Miscellaneous Papers. 1905. Price, 5 cents.

53. The Date Palm. 1904. Price, 20 cents.

54. Persian Gulf Dates. 1903.

55. The Dry-Rot of Potatoes.

Price, 10 cents.

1904. Price, 10 cents.

56. Nomenclature of the Apple. 1905. Price, 30 cents.

57. Methods Used for Controlling Sand Dunes. 1904. Price, 10 cents.

59. Pasture, Meadow, and Forage Crops in Nebraska. 1904. Price, 10 cents.

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

61. The Avocado in Florida. 1904. Price, 5 cents.

62. Notes on Egyptian Agriculture. 1904. Price, 10 cents.

63. Investigation of Rusts. 1904. Price, 10 cents.

64. Destroying Algæ, etc., in Water Supplies. 1904. Price, 5 cents.

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

67. Range Investigations in Arizona. 1904. Price, 15 cents.

68. North American Species of Agrostis. 1905. Price, 10 cents.

69. 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. 1905. Price, 5 cents.

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

74. 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.

79. Variability of Wheat Varieties in Resistance to Toxic Salts. 1905. Price, 5 cents. 80. Agricultural Explorations in Algeria. 1905. Price, 10 cents.

[Continued on page 3 of cover.]