. Bulletin. Natural history; Natural history. Freeport Mean Jan. temp. Mean July temp. Mean annual temp. Mean inches snowfall Frostfree days Annual precipitation -160 -34 nx Chicago Mean Jan. temp. Mean July temp. Mean annual temp. Mean inches snowfall Frostfree days 160-170 Annual precipitation -34. Fig. 3.—Temperature and precipitation data for five Illinois cities. Data from Page (1949).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illus

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. Bulletin. Natural history; Natural history. Freeport Mean Jan. temp. Mean July temp. Mean annual temp. Mean inches snowfall Frostfree days Annual precipitation -160 -34 nx Chicago Mean Jan. temp. Mean July temp. Mean annual temp. Mean inches snowfall Frostfree days 160-170 Annual precipitation -34. Fig. 3.—Temperature and precipitation data for five Illinois cities. Data from Page (1949).. 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