Historical Sketch of the Academy (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 Excerpt: ...Essex Co. (True); Essex Co. (Russell); Westfield, Hampden Co. (Smith. Coll.). Michigan: Otter Lake, Lapeer Co. (Walker). New Jersey: Drainage ditches east of Burlington, Burlington Co. (Baker; Pilsbry). New York: South end Qiyuga Lake, near Ithaca, Tompkins Co.; Erie Canal; Maplewood Park, Rochester, Monroe Co.; 4 miles south of Cayuga, Cayuga Co. (Baker); Charlotte Lake, Columbia Co. (Lea). Rhode Island: The Fountain, Pawtucket, Providence Co. (H. F. Carpenter); Rhode Island (Walker). BRITISH AMERICA. Ontario: Ottawa, Carleton Dist. (Heron); Carleton Co. (Walker). Geological Range: Unknown. Ecology: Abundant in still water in sheltered borders of rivers, in small brooks, ditches and streams and in shallow overflows. Clings to dead leaves or other submerged debris or crawls over the muddy bottom of its habitat, in shallow water. Associated with Galba obrussa, Aplexa hypnorum and the small planorbcs (Baker). In ditches and brooks in pastures (True). Common in damp places and in ditches along roads where water collects only in rainy weather (Nylander). Remarks: The shell of umbilicata may be distinguished from cubensis by its smaller size, longer spire, less globose body whorl, rounder spire whorls and by the less triangular and more erect inner lip, which is peculiarly rolled over in cubensis. In half-grown specimens the spire is a trifle shorter than the aperture, but in mature individuals the spire is as long, or even a trifle longer, than the aperture. In umbilicata the center of rotundity of the body whorl is nearer the anterior end than in cubensis, the latter being decidedly effusive anteriorly. Specimens are occasionally found with a pink columella. Umbilicata differs from humilis in the shape of the inner lip, which forms a broad, flat, rolled up she...