SOME GLACIAL WASH-PLAINS. 73 



BIBLIOGRAPHY. 



The following references include those papers which 

 relate to the country lying south of a line drawn from 

 Boston to Worcester and east of Connecticut. A few 

 papers relating to the New Haven region are added. 



1856. Prof. Edward Hitchcock, • in descrihinir the sur- 

 face geology of New England, refers to gravelly and sandy 

 plains of the lowlands as " sea-bottoms." 



187l>. Mr. Warren Upham,^ in a paper on " The for- 

 mation of Cape Cod," discusses the leading facts in the 

 moraine of that stage. 



1880. The same author^ later discusses " The succession 

 of glacial deposits in New England." 



1881. Mr. CJpham^ describes " The Glacial Drift in 

 Boston and Vicinity." 



1883-84. The late Professor J. D. Dana, in a paper 

 under the title of " Phenomena of the glacial and Cham- 

 plain Periods about the mouth of the Connecticut Valley, 

 in the New Haven region,"^ gives a detailed map of the 

 glacial sand-plain about New Haven with elevation'^ and 

 discusses the origin of the plain and its features. He re- 

 fers the deposit to coalescing sand-bars formed by flooded 

 waters in the valley during the retreat of the ice-sheet. 

 Deep depressions in the plain are ascribed to lack of dep- 

 osition. It was held that the ice had vanished from the 

 district when the plain was deposited. 



1888. Professor Shaler*' made a report on the Geology 

 of the Island of Martha's Vineyard, in which he describes 

 the large outwash plain or frontal apron, ascribing it to 



' Illustrations of Surface Geology, 1856, p. 44. 



» Am. Nat. vol. XIII, 1879, pp. 489-502; 562-565. 



3 Am. AsBor. Adv. Sci. Proc. vol. XXVIII, pp. 299-310. 



♦Proc. Boston Soc. Nat. met. vol. XX, pp. 220-334 



•Am. Journ. of Science, vol. XXVI, 1888, pp. 3U-361; and vol. xxvii, pp. 113-130. 



•7th Annual Report, U. S. Geol. Survey, pp. 314-320. 



