BIBLIOGRAPHY 
Only those papers are listed to which citations have been made 
in the text. 
Apams, C. C. An Ecological Study of Prairie and Forest In- 
vertebrates. Bulletin of the Illinois State Laboratory of 
Natural History. Vol. XI, Article 1: pp. 34-279. 1915. 
BrumFieL, D. M. Macroscopic Fauna of a Small Brook. Pro- 
ceedings Iowa Academy of Science. Vol. 22: pp. 363-374. 
1915. 
CALVIN, SAMUEL. Geology of Johnson County. Annual Report 
of Iowa Geological Survey, Vol. VII: pp. 33-116. 1897. 
Heubinger Survey and Map Publishing Company. 1900. Atlas 
of Johnson County, Iowa. 
HEuBINGER, M. Good Roads Map of Johnson County, Iowa. 
Adopted by the State Highway Commission. 1913. 
Merriam, C. H. Life Zones and Crop Zones in the United States. 
Bulletin No. 10, U. S. Department of Agriculture, Division 
of Biological Survey. 79 pages. 1898. 
SHELFORD, V. E. Animal Communities in Temperate America. 
Bulletin No. 5, Geographical Society of Chicago. 362 pages. 
1913. 
SHIMEK, B. The Prairies. Bulletin from the Laboratories of 
Natural History of The State University of Iowa. Volume 
VI, Number 2: pp. 169-240. 1911. 
VEBLEN, A. A., Gurus, K. E., Surry, A. G., Remy, J. F. 
Climatological Data, Iowa Section; Weather Bureau Office, 
Des Moines, Iowa. Published monthly. 1896-1917. 
Topographical Maps, published by the United States Geological 
Survey in cooperation with the lowa Geological Survey, Des 
Moines, Iowa. Cedar Rapids, Mechanicsville, Iowa City, 
and West Liberty Sheets surveyed in 1887; Amana and 
Oxford Sheets surveyed in 1888. 
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