. Bulletin. work done in connection with valuation of Danish watersfrom 1883 to 1917. Rep. Danish Biol. Station, 25 (1918) : 1—62. PROFILE OF A SECTION OF THE ILLINOIS RIVER Profile of the Illinois River from Chillicothe to Lagrange dam, showingelevations of water surface at low gage of 1901, channel depths, and generalcharacter of upper layer of bottom soils and sediments. The profile marks outclearly the three deep, fiat-sloped, mud-bottomed, natural pools in which therichest accumulations of small bottom-animals were found both in 1913 and1915, viz.: the Peoria Lake pool, lying behind the g
. Bulletin. work done in connection with valuation of Danish watersfrom 1883 to 1917. Rep. Danish Biol. Station, 25 (1918) : 1—62. PROFILE OF A SECTION OF THE ILLINOIS RIVER Profile of the Illinois River from Chillicothe to Lagrange dam, showingelevations of water surface at low gage of 1901, channel depths, and generalcharacter of upper layer of bottom soils and sediments. The profile marks outclearly the three deep, fiat-sloped, mud-bottomed, natural pools in which therichest accumulations of small bottom-animals were found both in 1913 and1915, viz.: the Peoria Lake pool, lying behind the great bar thrown up by FarmCreek; the Havana pool, behind the great natural wier formed by the washfrom Spoon River; and the Sangamon pool, lying behind the high bar thrownup by the mouths of the Sangamon. The data here used (elevations, soundings,and borings) are from the report of the U. S. Engineers Survey for a deepwaterway, House Document No. 263, 59th Congress, 1st session, Washington,1905. s: too ^.. ^:il^;^fe:l::^^-;::^:^:l?;::|^^feilii::|;:^;;::H::::l::??i^:l,:J:,,J;i 4^frrlM^fiu;i|-^^l4H4tH^;-^^l+^/Tri^m^i^-^^^lt^
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
