. Lessons in botany. Botany. 212 BOTANY. As the cotyledons become exposed to the light they assume a green color. Some of the stored food in them goes to nourish the embryo during germination, and they therefore become smaller, shrivel somewhat, and at last fall off. 350. The castor-oil bean.—This is not a true bean since it belongs to a very different family of plants. (euphorbiaceas). In the germina- tion of this seed a very interesting comparison can be made with that of the garden bean. As the '' bean swells the very hard outer coat generally breaks open at the free end and slips off at th
. Lessons in botany. Botany. 212 BOTANY. As the cotyledons become exposed to the light they assume a green color. Some of the stored food in them goes to nourish the embryo during germination, and they therefore become smaller, shrivel somewhat, and at last fall off. 350. The castor-oil bean.—This is not a true bean since it belongs to a very different family of plants. (euphorbiaceas). In the germina- tion of this seed a very interesting comparison can be made with that of the garden bean. As the '' bean swells the very hard outer coat generally breaks open at the free end and slips off at the stem end. The next coat within, which is also hard and shining black, splits open at the oppo- site end, that. 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 and company
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