Mast, Samuel Ottmar, 1871- · New York, J. Wiley · leaf 208
ion. — It has already been demonstrated thatneither the direction of the rays through the organism, inaccord with Sachs theory, nor the angle between the ra>sand the sensitive surface, in accord with Loebs explana-tion, is of importaiice in explaining the orienting reactionsof the fly larvae.… … n 1)1 Fig. 31. The process of locomotion and orientation in blow-fly larvae, a-j,different positions taken during the process; w, 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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