Open AccessThe Numbers and Local Distribution in Summer of Illinois Land Birds of the Open Country
Author(s) -
Stephen Alfred Forbes,
Alfred O. Gross
Publication year - 1922
Publication title -
illinois natural history survey bulletin/bulletin - illinois natural history survey
Language(s) - English
Resource type - Journals
eISSN - 2644-0687
pISSN - 0073-4918
DOI - 10.21900/j.inhs.v14.315
Subject(s) - distribution (mathematics) , value (mathematics) , order (exchange) , repetition (rhetorical device) , geography , statistics , mathematics , physical geography , economics , linguistics , philosophy , mathematical analysis , finance
It was hence particularly desirable that additional data should be collected during at least a part of a second year in order that it could be seen to what extent those of the first year might have a somewhat general application, and in order also that by a combination of the two sets of data a broader basis might be had for generalizations of more stable value; and this was done by a substantial repetition, during the three summer montsh of 1909, of the summer program of 1907.