. Bulletin. Natural history; Natural history. Fig. 13.—Recent specific records of gray fox occurrence in Illinois. Dates show counties in which gray foxes were reported for the year indicated. Figures in the margins show catch per square mile as revealed by the Brown & Yeager report for the 1938-39 and 1939-40 seasons. table 7. They rise from 14 for the 1934- 35 season to 16 during the 1936-37 and 1937-38 seasons, and then drop to 14 dur- ing the 1938-39 season, only to rise to 18 in 1940-41. The distance between peaks and troughs may not be measured because of lack of dat
. Bulletin. Natural history; Natural history. Fig. 13.—Recent specific records of gray fox occurrence in Illinois. Dates show counties in which gray foxes were reported for the year indicated. Figures in the margins show catch per square mile as revealed by the Brown & Yeager report for the 1938-39 and 1939-40 seasons. table 7. They rise from 14 for the 1934- 35 season to 16 during the 1936-37 and 1937-38 seasons, and then drop to 14 dur- ing the 1938-39 season, only to rise to 18 in 1940-41. The distance between peaks and troughs may not be measured because of lack of data for the three seasons following 1930- 31. The index figures for the average catcli per effective fur-taker tend to run counter to the index figures for the per cent of. 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 Illinois. Natural History Survey Division. Urbana, State of Illinois, Dept. of Registration and Education, Natural History Survey Division
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
