DAHTOS.] 



NORTH AMERICAN GEOLOGY. 



789 



Pleistocene— Continued.. 



Minnesota, Wisconsin, Michigan— 

 Continued. 

 1834. Expedition to Itasca Lake, 

 Schoolcraft. 

 Expedition to northwestern In- 

 diana, Allen and Schoolcraft. 

 1836. Region around Fort Winnebago, 

 Wis., Ruggles. 

 Reconnaissance from Washington 

 to Coteau des Prairies, Feather- 

 stonhaugh. 



1838. Report of State geologist of Mich- 



igan, 1837, Houghton. 



1839. Report on Wayne and Monroe 



counties, Mich., Hubbard, B. 



Second report of State geologist 

 of Michigan, Houghton. 



Ingham and parts of Eaton and 

 Jackson counties, Mich., Doug- 

 lass, C. C. 



1840. Lenawee, Hillsdale, and other 



counties,Miohigan,Hubbard,B. 



Third report of State geologist of 

 Michigan, Houghton. 



Jackson, Calhoun, and other coun- 

 ties, Michigan, Douglass, C. C. 



Report on lead region of the Up- 

 per Mississippi, Locke. 



Journey to Coteau des Prairies ; 

 pipestone quarry and granite 

 bowlders, Catlin. 



1841. Bowlders and scratches, Mather. 

 Fourth report of geologist of 



Michigan, Houghton. 

 Geology of organized counties of 



Michigan, Hubbard, B. 

 Northern part of lower peninsula 



of Michigan, Douglass. 



1842. Sand storms, and beds about the 



lakes, Schoolcraft. 



1843. Geology of New York, first dis- 



trict, Mather. 

 Region of basin of the Upper 

 Mississippi, Nicollet. 



1845. Excavation by recession of cata- 



racts, Featherstonhaugh. 



1846. District south of Lake Superior, 



Burt and Hubbard. 

 Observations on magnetic dip, 

 Locke. 



1847. Report of survey of Wisconsin 



and Iowa, Owen D. D. 

 Bowlder of copper on southern 

 shore of Lake Superior, Shep- 

 herd, F. 



Pleistocene — Continued. 



Minnesota, Wisconsin, Michigan — 

 Continued. 



1847. Lacustrine deposits in vicinity of 



the Great Lakes, Lapham. 

 Drift furrows, etc., of rocks of 

 Lake Superior, Shepherd, F. 



1848. Statistics of coal, Taylor, E. C. 

 Reconnaissance of Chippewa dis- 

 trict of Wisconsin, etc., Owen, 

 D. D. ; Norwood. 



1849. Terraces, bars, drift, and polished 



surfaces of Lake Superior, 

 Agassiz, L. 



1850. Lake Superior, Agassiz, L. 

 Erratic phenomena about Lake 



Superior, Agassiz. 

 Territory of the Minnesota, Pope, 

 John. 



1851. Beaches of Lake Michigan, Whit- 



tlesey. 

 Terraces of Lake Erie, Desor. 

 Clay and drift near Lake Superior, 



Desor. 

 Swamps bordering the Western 



rivers, Desor. 

 Section from Wolf River to Lake 



Michigan, Whittlesey. 

 Geology of Lake Superior land 



district, iron region, Foster and 



Whitney. 

 Superficial drifts of Northwestern 



States, Whittlesey. 

 Wells in red clay of Green Bay, 



Mich., Whittlesey. 

 Superficial deposits, Lake Supe- 

 rior land district, Desor. 



1852. Drift of Northern and Western 



States, Whittlesey. 



Survey of Wisconsin, Iowa, Min- 

 nesota, etc., Owen, D. D. 



Report on valleys of Minnesota, 

 Mississippi, and Wisconsin riv- 

 ers, Shumard, B. F. 



Wisconsin south of Lake Supe- 

 rior, Whittlesey. 



Geology of middle and western 

 Minnesota, Norwood. 

 1854. Drift etchings. Lake Superior, 

 Whittlesey. 



Origin of drift of Lake Superior, 

 etc., Desor. 



First report on survey of Wiscon- 

 sin, Daniels. 



Dunes on shores of the lakes, 

 Desor. 



