Mast, Samuel Ottmar, b.1871 · New York, J. Wiley & Sons; [etc., etc.] · leaf 196
vae under the differentconditions are represented in Fig. 28. It will be seen by referring to the figure that the larvaecan move in a direction leading from any point between thetwo sources of light just like all the other lower organismstested under these conditions. Loeb says (1905, p. 61),… … Fig. 28. Direction of movement of fly larvae in light from two sources; n, m,direction of rays; i, course in light from n and m 50 and 5.5 ca. m. respectively;2, course in light from n and m, 50 and 15 ca. m. respectively; 3, course in lightfrom n and m, 50 and 60 ca. m. respectively. Lines i, 2,…
Light -- Physiological effect · Phototropism
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