42 GLACIAL FORMATIONS OF ERIE AND OHIO BASINS. 



Randall, F. A. Observations of the geology around Warren, Pennsylvania: Second 

 Geol. Survey Pennsylvania, Rept. I, 1874, pp. 50-54; also Rept. I*, 1883. pp. 

 1-15, 19-22, .309-311. 



Read, M. C. Sketches of the geologj^ of Geauga and Holmes counties, Ohio: Rept. 

 Geol. Survey Ohio, 1870, pp. 463-484. 



Geology of Ashtabula, Trumbull, Lake, and Geauga counties, Ohio: Geology 



of Ohio, Vol. 1, 1873, pp. 481-533. ' 



Geolog}' of Huron, Richland, Knox, and Licking counties, Ohio: Geology 



of Ohio, Vol. Ill, 1878, pp. 289-361. 



Geology of Ashland, Wayne, and Holmes counties, Ohio: Geology of Ohio, 



Vol. Ill, 1878, pp. 519-561. 



Water supply of drift clay lands of Ohio: Reprint from Ohio Agricultural 



repoi't, 8 pages. 

 Redfield, Wm. C. On the cause of the drift phenomena in Poi'tage County, Ohio: 



Am. Jour. Sci., 1st series. Vol. XLVII, 1844, pp. 120-121. 

 Dispersion of bowlders and drift: Proc. Am. Assoc. Adv. Sci., Vol. II, 



1848, pp. 310-311. 

 Reed, Stephen. On trains of bowlders, and on the transport of bowlders to a level 



above that of their source: Am. Jour. Sci., 3d series. Vol. V, 1873, pp. 218-219. 

 Riddell, John L. A reconnaissance in northern and western Ohio, in which the 



drift as well as the rock formations received attention. A report of 34 pages by 



one of the special committee appointed bj^ the legislature to i-eport on the method 



of obtaining a complete geological survey of Ohio. Submitted in January, 1837, 



and published by authority of the legislature. Columbus, 1837. 

 Roberts, T. P. Examination and survey of Allegheny River from Franklin, 



Pennsylvania, to Olean, New York: Senate Doc. No. 89, 46th Congress, 2d 



session, February, 1880, 25 pages. 

 N Examination of the Allegheny River up to the mouth of French Creek: 



Executive Doc. No. 21, H. R. 45th Congress, 3d session, Januarj^ 1879, 17 



pages. 

 Roberts, W. M. Survey of the Ohio River: Executive Doc. No. 72, H. R. 41st 



Congress, 3d session, January, 1871, 198 pages. 

 Rogers, H. D. . On the Falls of Niagara: Am. Jour. Sci., 1st series, Vol. XXVII, 



1835, pp. 326-335. 



Deposition of drift in Pennsylvania: Am. Jour. Sci., 1st series. Vol. XLI, 



1841, p. 175. 



On the absence of material from the south in the drift: Am. Jour. Sci., 



1st series. Vol. XLV, 1843, p. 229. 



On the origin of the drift, and of the lake and river terraces of the United 



States and Europe, with an examination of the laws of aqueous action, connected 

 with the inquiry: Proc. Am. Assoc. Adv. Sci., Vol. II, 1850, pp. 239-255. 



Physical geograph}' of Pennsylvania: Geologj' of Pennsylvania, Vol. I, 



1858, pp. 1-57. 



The northern Pleistocene of Pennsylvania: Geology of Pennsylvania, Vol. 



II. 1858, pp. 774-776, 928, 941. 



