. Effects of the rays of radium on plants. Plants. io8 EFFECTS OF EXPOSING SEEDS. Fig. 8. Experiment 2-^. Retardation of Germination and Growth of Oats Exposed to Radium Rajs During Early Stages of Germination. Cf. figures 9 and 24. April I, 3 P. M. After removing the plants and carefully washing the soil from the roots, the following observations were made : Roots Number. Length. Secondary roots. Diameter.] Root-hairs. Root-tips. Radium (av. for 10 plants). Control (av. for 7 plants). Average (estimated) about Estimated twice the length of ]/2 as long as the control. the radiated. Non
. Effects of the rays of radium on plants. Plants. io8 EFFECTS OF EXPOSING SEEDS. Fig. 8. Experiment 2-^. Retardation of Germination and Growth of Oats Exposed to Radium Rajs During Early Stages of Germination. Cf. figures 9 and 24. April I, 3 P. M. After removing the plants and carefully washing the soil from the roots, the following observations were made : Roots Number. Length. Secondary roots. Diameter.] Root-hairs. Root-tips. Radium (av. for 10 plants). Control (av. for 7 plants). Average (estimated) about Estimated twice the length of ]/2 as long as the control. the radiated. None, except a few very Numerous on all plants save short ones on the most vig- one, which had only 3-3 small orous plant. ones. Decidedly club-shaped in five of the specimens. Appear to be slightly more numerous, and about twice as long as in the control plants. (See R, FIGURE 9.) Much darker colored than in Of normal appearance. De- the control plants, cidedly lighter than those of the radiated plants. Normal appearance : not en- larged near the root-tip. 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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Keywords: ., bookcentury1900, bookdecade1900, bookpublisher, booksubjectplants
