LITERATURE CITED. 



Britton, N. L., and Brown, Addison. 



1913. Illustrated Flora of the Northern United States, Canada, and the British 

 Possessions . . . ed. 2, v. 1, New York, p. 490-491. 

 Chesnut, V. K. 



1902. Plants used by the Indians of Mendocino County, California. Contri- 

 butions, U. S. National Herbarium, v. 7, p. 321-322, 327. 



and Wilcox, E. V. 



1901. The stock-poisoning plants of Montana; a preliminary report. U. S. De- 

 partment of Agriculture, Division of Botany, Bulletin 26, p. 51-64, pi. 1. 

 Collier, Peter. 



1882. Proximate analysis of Zygadenus paniculatus. Report, [U. S.] Commis- 

 sioner of Agriculture, 1881/82, p. 547-548. 

 Coulter, J. M. 



[1909.] New Manual of Botany of the Central Rocky Mountains . . . rev. by 

 Aven Nelson. New York, p. 118-119. 

 Coville, F. V. • 



1897. Notes on the plants used by the Klamath Indians of Oregon. Contribu- 

 tions, U. S. National Herbarium, v. 5, no. 2, p. 93. 

 Gray, Asa. 



1848. Melanthacearum Americae Septentrionalis revisio. Annals, Lyceum of 

 Natural History, New York, v. 4, p. 124. 



[1908.] Gray's New Manual of Botany, ed. 7, rev. by B. L. Robinson and M. L. 

 Fernald. New York, Cincinnati, p. 284. 



Heller, A. A. 



1909. The death camus. Muhlenbergia, v. 5, no. 3, p. 50-52. 



Heyl, F. W., and Hepner, F. E. 



1913. Some constituents of the leaves of Zygadenus intermedius. III. Journal, 

 American Chemical Society, v. 35, no. 6, p. 803-811. 



and Loy, S. K. 



[1912.] Zygadenine. The crystalline alkaloid of Zygadenus intermedius. Sec- 

 ond paper. Wyoming Agricultural Experiment Station, 22d Annual Report, 

 1911/12, p. 51-57, 2 fig. 



1913. Zygadenine. The crystallin alkaloid of Zygadenus intermedius. Journal, 

 American Chemical Society, v. 35, no. 3, p. 258-262, 2 fig. See also Wyoming 

 Agricultural Experiment Station, Bulletin 101. 



— Loy, S. K., Knight, H. G., and Prien, O. L. 



1912. The chemical examination of death camas. Wyoming Agricultural Experi- 

 ment Station, Bulletin 94, 31 p., 3 fig. 



— and Raiford, Charles. 



[1911.] Analysis of Zygadenus intermedius. First paper. Wyoming Agricul- 

 tural Experiment Station, 21st Annual Report, 1910/11, p. 62-69. See also 

 Journal, American Chemical Society, v. 33, no. 2, p. 206-211, 1911. 



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