. The natural history of the farm; a guide to the practical study of the sources of our living in wild nature. Natural history. THE FARM STREAM 35 the swiftest current or trailing down the ledges in the waterfall, or encircling the piling where the waves wash it constantly. It is of a bright green color. There are apt to be various other algae also, some forming sppts and blotches of blue-green color on the surfaces of rocks, where partly exposed at low water; others forming little brownish gela- tinous lumps like peas lying on the stream bed. Of the higher plants there will be hardly any pres
. The natural history of the farm; a guide to the practical study of the sources of our living in wild nature. Natural history. THE FARM STREAM 35 the swiftest current or trailing down the ledges in the waterfall, or encircling the piling where the waves wash it constantly. It is of a bright green color. There are apt to be various other algae also, some forming sppts and blotches of blue-green color on the surfaces of rocks, where partly exposed at low water; others forming little brownish gela- tinous lumps like peas lying on the stream bed. Of the higher plants there will be hardly any present in the rapids: per- haps, a few trailing mosses or other creepers rooted in the crevices at the edge of the cur- rent, and just escaping annihilation at every flood Fig. ,13. Leaf-form in three common sub- In quiet waters covering muddy shoals i^l^lf^^^ln whSS! the vegetation is richer and more varied. The dominant plants are seed plants. Some of these (such as are shown in Figs. 12 and 13) grow wholly submerged. A few grow rooted to the bottom but have broad leaves (Fig. 14) that float upon the surface. A few small plants (Fig. 15) float freely upon the surface, in the more sheltered openings. And there are many rooted in the. leaves grow in whorls surrounding the stem at the nodes: a, the common water-weed (Elodea canadensis or Pkilotria canadensis); b, the water horn-^ wort (Ceratophyllum demersum): c, the water milfoil (Myrio- phyllum).. 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 Needham, James G. (James George), 1868-1956. Ithaca, N. Y. , The Comstock Publishing Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectnaturalhistory, booky
