SKETCH OF HENRY CARVILL LEWIS. 407 



cial epoch, when the ice-sheet was mostly melted away. There 

 can be little donbt that the continuation of Lewis's study of the 

 drift in England, if he had lived, would have soon convinced him 

 of the correctness of the opinions of Searles V. Wood, Jr., Mr. 

 Skertchly, and James Geikie, that land-ice during the earlier Gla- 

 cial epoch overspread all the area of the Chalky bowlder-clay, ex- 

 tending south to the Thames. Small portions of northern Eng- 

 land, however, escaped glaciation both then and during the later 

 cold epoch when the terminal moraines mapped by Lewis were 

 accumulated ; and these tracts of the high moorlands in eastern 

 Yorkshire and of the eastern flank of the Pennine chain are simi- 

 lar to the driftless area of southwestern Wisconsin. 



" Comparison of the drift in the United States and Great Britain 

 enabled Prof. Lewis to refer the British modified drift, both that 

 often intercalated between deposits of till and that spread upon 

 the surface in knolly and hilly kames and more evenly in plains 

 and along valleys, to deposition from streams supplied by the 

 glacial melting, the material being washed out of the ice-sheet. 

 These beds, however, are to be carefully distinguished from those 

 of interglacial and post-glacial age. It is greatly to be regretted 

 that this sagacious observer was not spared for the fulfillment of 

 his plan of yet more extended study of European glacial deposits 

 in the light of his wide knowledge of the terminal moraine and 

 other drift formations in this country." 



Prof. Lewis was a member of the American and the British 

 Associations ; of the American Philosophical Society, the Acad- 

 emy of Natural Sciences, and the Franklin Institute, in Phila- 

 delphia ; of the Geological Society of Liverpool ; and a Fellow of 

 the Geological Societies of London and Germany. 



He was married in 1882 to a daughter of the late William 

 Parker Foulke, of Philadelphia, who, with, a daughter, survives 

 him, and will transfer his unfinished papers, for completion, to 

 the distinguished geologists who have generously offered their 

 assistance. He possessed a strong Christian faith, and was an 

 active member of St. Michael's Protestant Episcopal Church, 

 Philadelphia, of whose Sunday school he was for many years a 

 teacher, and for a long time superintendent. He had the happy 

 faculty of imparting knowledge to those whom he taught, and in 

 making his instructions interesting and agreeable. With a high 

 character, a pure standard of manhood, fine mental and physical 

 powers, a wide range of scholarship, a happy, genial, and enthu- 

 siastic temperament, rare perseverance and industry, and a lofty 

 devotion to the interest not only of science but of mankind, his 

 life seemed to promise the widest usefulness and honor. 



The following list of Prof. Lewis's published papers is abbre- 

 viated from the " American Geologist " : 



