. A text-book of botany for secondary schools. Botany. 256 A TEXT-BOOK OF BOTANY sling-fruits. In the violet and the witch-hazel, when the seed-vessel splits, its walls press upon the seeds so that they are pinched out, as a moist apple-seed is projected by being pressed between the thumb and the finger (Fig. 248). When the pod of the wild bean bursts, the two -wdves twist violently and throw theseeds(). In the touch-me- not, or the balsam, a strain is devel- oped in the grow- ing wall of the seed-vessel, so that at rupture, which may be brought about by slight pressure, the pieces sudd
. A text-book of botany for secondary schools. Botany. 256 A TEXT-BOOK OF BOTANY sling-fruits. In the violet and the witch-hazel, when the seed-vessel splits, its walls press upon the seeds so that they are pinched out, as a moist apple-seed is projected by being pressed between the thumb and the finger (Fig. 248). When the pod of the wild bean bursts, the two -wdves twist violently and throw theseeds(). In the touch-me- not, or the balsam, a strain is devel- oped in the grow- ing wall of the seed-vessel, so that at rupture, which may be brought about by slight pressure, the pieces suddenly curl up and throw the seeds. The squirting cucumber is so named because it becomes very much distended with water, which is finally forcibly ejected. Fig. 250.—Winged fruit of maple.—After 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 Coulter, John Merle, 1851-1928. New York, D. Appleton
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1906
