Mast, Samuel Ottmar, 1871- · New York : J. Wiley & Sons · leaf 105
ods at only a slight angle with the first, apparentlytrying to get around the obstacle in this way. The char-acter of the response did not change after the first pseudopodcame in contact with the light, or after the second and thethird came in contact with it. But after the fourth became…
Light · Phototropism
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