. Effects of the rays of radium on plants. Plants. EFFECTS OF EXPOSING SEEDS 109 Summary The exposure to radium rays of seeds previously soaked was fol- lowed, in all instances by a retardation of growth. When seeds of Lupinus a/dus were exposed for 17 hrs. to rays from radium bromide of 1,500,000 X the seedlings produced by them grew only one half as rapidly as normally. Exposure of soaked seeds of buckwheat for. Fig. 9. Experiment 25. Roots and Root-Hairs of Seedlings from the Exposed Culture {J^j, and from the Unexposed. Slightly Enlarged. Cf. figure S. 24 hrs. to rays of the same strength
. Effects of the rays of radium on plants. Plants. EFFECTS OF EXPOSING SEEDS 109 Summary The exposure to radium rays of seeds previously soaked was fol- lowed, in all instances by a retardation of growth. When seeds of Lupinus a/dus were exposed for 17 hrs. to rays from radium bromide of 1,500,000 X the seedlings produced by them grew only one half as rapidly as normally. Exposure of soaked seeds of buckwheat for. Fig. 9. Experiment 25. Roots and Root-Hairs of Seedlings from the Exposed Culture {J^j, and from the Unexposed. Slightly Enlarged. Cf. figure S. 24 hrs. to rays of the same strength retarded growth, and impaired the general vigor of the plants. One experiment was tried with flax seed, but an exposure of 48 hrs. (1,500,000 x) was followed by no appreciable effect on the germination of the seeds. An initial retardation of the growth of white mustard after the. 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 original Gager, C. Stuart (Charles Stuart), 1872-1943. New York
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