Mast, Samuel Ottmar, b.1871 · New York, J. Wiley & Sons; [etc., etc.] · leaf 191
s. d. Orientation in light from two sources. — In the studyof orientation in light from two sources the larvae wereexposed on moist black paper just as in the preceding experi-ment, in a field of light composed of two small horizontal 178 LIGHT AND THE BEHAVIOR OF ORGANISMS beams, one from each of…
Light -- Physiological effect · Phototropism
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