. Experiments with plants. Botany. 324 HXPJUBIMJiyTS WITS PLANTS. 176. Fruit of Bur Clover. lens, we see that they are covered with spines, prickles, hooks, claws or barbs of the most various description, so that we may say that plants have tried almost every possible device in solving this particular problem. Many fruits are sticky, and will cling even to the smooth- est surfaces, while some, like the Tar weeds, are both sticky and armed with hooks, so that they cling equally well to rough and smooth objects. A simple way to test the efficiency of these devices is to toss them against a blank
. Experiments with plants. Botany. 324 HXPJUBIMJiyTS WITS PLANTS. 176. Fruit of Bur Clover. lens, we see that they are covered with spines, prickles, hooks, claws or barbs of the most various description, so that we may say that plants have tried almost every possible device in solving this particular problem. Many fruits are sticky, and will cling even to the smooth- est surfaces, while some, like the Tar weeds, are both sticky and armed with hooks, so that they cling equally well to rough and smooth objects. A simple way to test the efficiency of these devices is to toss them against a blanket hanging vertically, and notice which cling most readily to its surface. Examine the coats of animals to see what plants are most successful in attaching their seeds or fruits. Many seeds are carried about by birds (and other animals) in the mud which sticks to them. This is especially the case with such birds as frequent swampy and muddy places. Birds distribute seeds principally, however, by eating the berries and other fleshy fruits, and after- wards voiding the seeds uninjured. Such fruits are usually sour, acrid or otherwise disagreeable to the taste during their development; but, when ripe, become sweet and fine-flavored: at the same time they assume a characteristic and usually couspic-. 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 Osterhout, Winthrop John Van Leuven, 1871-. New York, The Macmillan company; London, Macmillan & co. , ltd.
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