. A biological survey of the sand dune region on the south shore of Saginaw Bay, Michigan. Sand dunes. 150 MOLLUSCA. lected. altho the place seemed almost too dry to support molluscan life. 42. Tamarack swamps. Around the most of Rush Lake, there are large tamarack swamps with the characteristic vegetation of tamaracks, sphagnum, black spruces, pitcher plants, sun-dews, poison sumach and huckleberries. Most of these places are without any molluscan life, but in the sphagnum in a very wet portion, a few specimens of Vitrea hammonis, Agriolimax campestris, Pisidium roperi, Lymnaea palustris, Mus
. A biological survey of the sand dune region on the south shore of Saginaw Bay, Michigan. Sand dunes. 150 MOLLUSCA. lected. altho the place seemed almost too dry to support molluscan life. 42. Tamarack swamps. Around the most of Rush Lake, there are large tamarack swamps with the characteristic vegetation of tamaracks, sphagnum, black spruces, pitcher plants, sun-dews, poison sumach and huckleberries. Most of these places are without any molluscan life, but in the sphagnum in a very wet portion, a few specimens of Vitrea hammonis, Agriolimax campestris, Pisidium roperi, Lymnaea palustris, Musculium truncatum, and M. securis were collected. Darlvatlon of the Sand Diine Habitats. shores. ,sandy shores. rock lodge. 7, Protected,'sandy an ores. \&. Sand pools^ 28,29. Sand dunes. 18,19. Swamps. 88, dunes> beaches. ,'shallow lake*. 18,» \ 16, ,deep lakes. swamps II swamps II. 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 Michigan. Geological Survey; Ruthven, Alexander Grant, 1882-1971. Lansing, Mich. : Wynkoop, Hallenbeck, Crawford co. , state printers
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Keywords: ., bookcentury1900, bookdecade1910, bookpublis, booksubjectsanddunes
