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Title:The Orchard Birds of an Illinois Summer
Author(s):Forbes, Stephen Alfred; Gross, Alfred O.
Illinois rivers and lakes
Orchard birds
Abstract:From 1894 to 1917 the Illinois State Laboratory of Natural History (since merged in the Natural History Survey of the State), of which the senior author of this paper was director, was active in quantitative studies of the plankton of the rivers and lakes of Illinois, making common use, in securing collections, of a ring net of very fine mesh, hauling it definite distances and at a fixed rate, measuring the product of each haul, identifying and sometimes counting the plankton organisms collected, bringing into comparison by this means the yield of different waters, situations, and seasons, and drawing such inferences as to cause and condition as were warranted by the data so obtained.
Issue Date:1921-06
Publisher:Champaign : Illinois Natural History Survey
Series/Report:Illinois Natural History Survey Bulletin; v. 014, no. 01
Publication Status:published or submitted for publication
Peer Reviewed:is peer reviewed
Rights Information:Copyright 2009 University of Illinois Board of Trustees. All rights reserved.
Date Available in IDEALS:2013-11-07

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