Mast, Samuel Ottmar, b.1871 · New York, J. Wiley & Sons; [etc., etc.] · leaf 206
ssion. - - It has already been demonstrated thatneither the direction of the rays through the organism, inaccord with Sachs theory, nor the angle between the raysand the sensitive surface, in accord with Loebs explana-tion, is of importance in explaining the orienting reactionsof the fly larvae.… … n FIG. 31. The process of locomotion and orientation in blow-fly larvae. a-j>different positions taken during the process; m, n, direction of light rays. Theanterior end of the larvae is quite regularly turned from right to left during theprocess of locomotion. If n is exposed and m shaded…
Light -- Physiological effect · Phototropism
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