. Carnegie Institution of Washington publication. LITERATURE CITED. 65 XIV. LITERATURE CITED. COCKERELL, T. D. A. 1903. The Colorado rubber plant. Bull. Colo. Coll. Mus. 1:1. COCKERELL, W. P. 1904. Note on a rubber-producing plant. Science, II, 19: 314. COOK, O. F. 1903. Culture of the Central American rubber tree. U. S. Dept. Agr. Bureau of Plant Industry Bull. 49. DODGE, C. R. 1897. Descriptive catalogue of useful fiber plants of the world. U. S. Dept. Agr. Fiber Investig. Rept. 9. DUNSTAN, W. R. 1910. Editorial in Imp. Inst. Bull. 8: 48. Fox, C. P. 1911. Ohio-grown rubber, crop of 1910. Ohi


. Carnegie Institution of Washington publication. LITERATURE CITED. 65 XIV. LITERATURE CITED. COCKERELL, T. D. A. 1903. The Colorado rubber plant. Bull. Colo. Coll. Mus. 1:1. COCKERELL, W. P. 1904. Note on a rubber-producing plant. Science, II, 19: 314. COOK, O. F. 1903. Culture of the Central American rubber tree. U. S. Dept. Agr. Bureau of Plant Industry Bull. 49. DODGE, C. R. 1897. Descriptive catalogue of useful fiber plants of the world. U. S. Dept. Agr. Fiber Investig. Rept. 9. DUNSTAN, W. R. 1910. Editorial in Imp. Inst. Bull. 8: 48. Fox, C. P. 1911. Ohio-grown rubber, crop of 1910. Ohio Nat., 11: 271. 1912. Another Ohio-grown rubber. Ibid., 12:469. HALL, H. M., and T. H. GOODSPEED. 1919. Rubber-plant survey of Western North America. Univ. Calif. Pub., Botany, 7:159-278. and H. G. YATES. 1915. Stock-poisoning plants of California. Calif. Agr. Exp. Sta. Bull. 249. HARRIES, C. 1905. Zur Kenntniss der Kautschukarten. Ber. Deut. Chem. Ges. 38: 1195-1203. 1919. Untersuchungen iiber den natiirlichen und kiinstlichen Kautschukarten. HILLIER, J. M. 1906. Colorado rubber. Bull. Misc. Inform. Kew, 218-219. HOAGLAND, D. R. 1915. Organic constituents of Pacific Coast kelps. Journ. Agr. Research 4:47. LLOYD, F. E. 1911. Guayule. Carnegie Inst. Wash. Pub. 139. MARSH, C. D., A. B. CLAWSON, J. F. COUCH, and W. W. EGGLESTON. 1920. The whorled milkweed as a poisonous plant. U. S. Dept. Agr. Bull. 800. PEARSON, H. C. 1919. Rubber-producing weeds in Germany. India Rubber World, 59:201. 1920. Ocotillo again to the front. Ibid., 63:9. RUSBY, H. H. 1909. Rubber plants of Mexico. Torreya, 9:177-184. SAUNDERS, A. T. 1910. Rubber found in milkweed. India Rubber World, 43: 4. SAUNDERB, WILLIAM. 1875. On the manufacture of rubber from a milkweed. Am. Pharm. Assoc. Proc., 23 Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the o


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