Mast, Samuel Ottmar, 1871- · New York, J. Wiley · leaf 81
ine with the shadowof the plumule cast on a white surface temporarily arrangedfor the purpose (Fig. 6). The intensity of light to which the plumules were ex-posed varied from about 2 to 14 ca. m. In most of theexperiments they were exposed to the lowest intensity, theedge of the plumule at the… … 11.30 ^ 11:15 11:15 A.M.
Light -- Physiological effect · Phototropism
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