. Elementary botany. Botany. io6 PHYSWLOG v. 215. How the first leaf appears.—As the embryo backs out of the seed, it turns downward into the soil, unless the seed is so lying that it pushes straii^ht downward. On the upper side of arch thus formed, in the petiole the cotyledon, a slit appears, through thip "pening the first arches its way out. The loop of petiole comes out first, and the later, as shown in fig. 98. The petiole now gradually. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearan
. Elementary botany. Botany. io6 PHYSWLOG v. 215. How the first leaf appears.—As the embryo backs out of the seed, it turns downward into the soil, unless the seed is so lying that it pushes straii^ht downward. On the upper side of arch thus formed, in the petiole the cotyledon, a slit appears, through thip "pening the first arches its way out. The loop of petiole comes out first, and the later, as shown in fig. 98. The petiole now gradually. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Atkinson, George Francis, 1854-1918. New York : H. Holt
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