classificatto:n- of American wheat varieties. 229 
(185) Stanton, T. R. 
1916. Cereal experiments in Maryland and Virginia. U. S. Dept. 
Agr. Bui. 336, 52 p., 6 fig. 
(186) Stewart, George. 
1919. The varietie.s of small grains and the market classes of 
wheat in Utah. In Jour. Amer. Sec. Agron., v. 11, no. 4, 
p. 163-169. 
(187) 1920. A variety survey and descriptive key of small grains in Utah. 
Utah Agr. Exp. Sta. Bui. 174, 35 p., 11 fig. 
(188) Sutton, George L. 
1910. Varieties of wheat recommended by the Department of Agri- 
culture. In Ag]-. Gaz. N. S. Wales, v. 21, pt. 3, p. 183-193; 
pt 4, p. 282-288 ; pt. 7, p. 593-598, 25 fig. 
(189) Theophrastus. 
1916. Enquiry into Plants . . . with an English Translation by Sir 
Arthur Hort. v. 2. London, New York. 
(190) Thomas, Levi M. 
1916. The origin, characteristics, and quality of Humpback wheat. 
U. S. Dept. Agr. Bui. 478, 4 p., 1 fig., 1 pi. 
(191) Thorburn, Jas. M., & Co. 
1889-1908. [Seed Catalogue], 1889, 1903, 1908. illus. New York. 
(192) Thorne, C. E. 
1881. Velvet Chaff wheat. In Rural New Yorker, v. 40, no. 1650, 
p. 618. 
(193) Todd, S. E. 
1868. The American Wheat Culturist. 432 p., 80 fig. New York. 
(194) TOURXEFORT, JoSEPH PiTTS. 
1719. lustitutioues Rei Herbariae. t. 1. Parisiis. 
(195) Tracy, S. M. 
1881. Varieties of wheat. In 15th Ann. Rpt. Mo. State Bd. Agr., 
1880-1881, p. 393-426. 
(196) Trowbridge, P. F. 
1920. Report of the Director, .July 1. 1917 to June 30, 1919. N. Dak. 
Agr. Exp. Sta. Bui. 136, 23 p., illus. 
(197) U. S. DEPART]\rENT OF AGRICULTURE, BuREAU OF PlANT INDUSTRY. 
1900-1920. Inventory of seeds and plants imported by the Office of 
Foreign Seed and Plant Introduction . . . |]898J-June 30, 
1916. No. 1-47. [S. P. I.] Numbers 1-43012. 
(198) ViLLARS, Dominique. 
1787. Histoire des Plantes de Dauphine. t. 2. Grenoble. 
(199) ViLMORiN, H. L. de. 
1889. Catalogue ^lethodique et Sjmonymique des Froments . , . 
76 p.. 10 pi. Paris. 
(200) Waldron, L. R., and Clark, .L A. 
1919. Kota, a rust-resisting variety of common spring wheat. In 
Jour. Amer. Soc. Agron., v. 11, no. 5, p. 187-195, pi. 7. 
(201) "Wellman, D. L. 
1880. The Saskatchewan Fife Wheat. . . 16 p. Detroit, Minn. 
