Mast, Samuel Ottmar, 1871- · New York : J. Wiley & Sons · leaf 294
imes observed, as stated elsewhere, that the colonies collect in greatnumbers in the open spaces between pond-lily leaves and other water plants00 dark, cloudy days, but that they a^ect in shaded places when the sunis bright. 268 UCHT AND THE BEBAVIOR OP ORGANISMS reversed. This is clearly shown in… … kg Fro. 33. The Mnu A and B represent the course* taken.by single Volvo* colo-nies as seen in water i cm. deep In a plale-Klass aquarium e. (The paths arc rep-resented- in approximately accurate proportions); t, a group o( three a»-voltNemst glowers- in a vertical position; a, carbon arc; /,…
Light · Phototropism
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