|Sources: Calculated by planimeter from the Kalamazoo County soil map in U.S. Department
of Agriculture, Bureau of Soils, Field Operations of the Bureau of Soils, Report No. 24 ( 1922),|
2 vols. ( Washington, D.C.: Government Printing Office, 1928). Volume 1 contains county
survey reports, including S. O. Perkins and James Tyson, "Soil Survey of Kalamazoo
County" ibid., 627-62; volume 2 contains loose-leaf soil maps of counties surveyed in 1922.
Perkins and Tyson's soil types have been fitted in the above table into a more general soil
classification scheme taken from J. O. Veatch, Soils and Land in Michigan ( East Lansing:
Michigan State College Press, 1953).
|Note: Class I: Supermarginal soils of highest fertility and greatest yields.|
|Class II: Supermarginal soils of lesser yields.|
|Class III: Soils better suited to specialized fanning or with severe usage problems.|
|Class IV: Submarginal soils, in some cases untillable.|