. Bulletin. Geography. 128 COMMUNITIES OF SMALL LAKES Characters of the formation: The formation is distinctly dependent upon a clean bottom of sand or coarser materials, and is made up of creeping forms and those using the bottom as a Represextative Animals of the Submerged Vegetation Fig. 75.—Upper fish, the green sunfish (Lepomis cyanellus); lower fish, the yellow perch (Percaflavescens); both juvenile; slightly reduced (original). Fig. 76.—A viviparous snail (Vivipara contectoides); natural size. Fig. 77.—A winter body or statoblast, of the gelatin-secreting polyzoan {Pecl
. Bulletin. Geography. 128 COMMUNITIES OF SMALL LAKES Characters of the formation: The formation is distinctly dependent upon a clean bottom of sand or coarser materials, and is made up of creeping forms and those using the bottom as a Represextative Animals of the Submerged Vegetation Fig. 75.—Upper fish, the green sunfish (Lepomis cyanellus); lower fish, the yellow perch (Percaflavescens); both juvenile; slightly reduced (original). Fig. 76.—A viviparous snail (Vivipara contectoides); natural size. Fig. 77.—A winter body or statoblast, of the gelatin-secreting polyzoan {Peclina- tella magnifica); 10 times natural size (original). Fig. 78.—A shrimp {Palaemoneies paliidosus); twice natural size (original). h) Submerged vegetation association of the open waters.—A lake of the coastal type is separated rapidly from the larger body of water in con- nection with which it is formed, or a morainic lake, when the ice 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 Geographic Society of Chicago. Chicago, Ill. : Published for the Society by the University of Chicago Press
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgeography, bookyear19
