54 MICHIGAN SURVEY, 1905. 



Davis, W. M. 



1889. The Rivers and Valleys of Pennsylvania. Nat. Geog. Mag., I, 

 No. 3, pp. 183-253. 

 Foster and Whitney. 



1849-50. Geology and Topography of a Portion of the Lake Superior 

 Land District in the State of Michigan. Ex. Doc, 1st Sess., 

 31st Cong., IX. 

 Gilbert, G. K. 



1897. Recent Earth Movements in the Great Lakes Region. 18th Ann. 



Rept. U. S. G. S., II, pp. 601-647. 

 Harvey, L. H. 



1903. A Study of the Physiographic Ecology of Mt. Ktaadn, Maine. 



The Univ. of Maine Studies, No. 5. 

 Hershey, 0. H. 



1901. Peneplains of the Ozark Highlands. Am. Geol., Jan., 1901, pp. 



21-37. 

 Irving, R. D. 



1893. The Copper Bearing Rocks of Lake Superior. U. S. G. S., Mdnog., 



No. 5. 

 Jordan and Evermann. 



1896. The Fishes of North and Middle America. Bull. U. S. N. M., 



No. 47, Pt. 1. 

 Lane, Alfred C. 



1898. Geological Report on Isle Royale, Michigan. Geol. Surv. of Mich. 



VI, Part 1. 

 Macoun, John. 



1883. Catalogue of Canadian Plants. Pt. I, Geol. and Nat. Hist. Surv. 

 of Canada. 

 Mill, H. R. 



1905. The Present Problems of Geography. Geog. Jour., XXV, No. 1, 

 pp. 1-17. 

 Marbut, C. F. 



1896. Physical Features of Missouri. Rep. Mo. Geol. Surv., X, pp. 

 13-109. 

 Ruthven, A. G. 



1904. Notes of the Molluscs, Reptiles and Amphibians of Ontonagon 



County, Michigan. Sixth Ann. Rep. Mich. Acad. Science, 1904, 

 pp. 188-192. 

 Taylor, F. B. 



1905. A Short History of the Great Lakes. Studies in Indiana Geog. 



(Dryer), pp. *90-lll. Terra Haute, Ind. 

 Transeau, E. N. 



1903. On the Geographical Distribution and Ecological Relations of 



the Bog Plant Societies of Northern North America. Bot. Gaz., 



XXXVI, pp. 401-420. 

 Upham, Warren. 



1894. Tertiary and Quaternary Baseleveling in Minnesota, Manitoba 



and Northwestward. Am. Geol., XIV, No. 4, pp. 235-246. 

 Van Hise, C. R. 



1894-95. Principles of North American Pre-Cambrian Geology. 16th Ann. 



Rep., U. S. G. S., Pt. I, pp. 571-843. 

 1896. A Northern Michigan Baselevel. Science, New Series, IV, pp. 



217-220. 



