LOESS AND ASSOCIATED INTERGLACIAL DEPOSITS 589 



as were neither overridden by the moraine nor buried under outwaeh remained 

 unchanged after the fall of lake Whittlesey; but southward from Spring hill the 

 submerged ridges were greatly modified — almost obliterated — by the storm waves 

 which swept over them. 



A longer abstract of this paper will be published in the Seventh An- 

 nual Report of the Michigan Academy of Sciences (1905), and it will be 

 published in full in the Journal of Geology. 



UPPER TRIAS OF THE LANDER BASIN, WYOMING 

 BY S. W. WILLISTON 



RED BEDS OF SOUTHWESTERN COLORADO AND THEIR CORRELATION 

 BY WHITMAN CKOSS AND ERNEST HOWE 



This paper is printed as pages 447-498 of this volume. 



GEOLOGY OF FISHERS ISLAND, NEW YORK 

 BY MYRON L. FULLER 



The paper is printed as pages 367-390 of this volume. 



PLEISTOCENE OF THE CHESAPEAKE AND DELAWARE BASINS 

 BY ARTHUR BIBBINS 



THE LOESS OF THE LOWER MISSISSIPPI 

 BY G. FREDERICK WRIGHT 



THE LOESS AND ASSOCIATED INTERGLACIAL DEPOSITS 

 BY B. SHIMEK 



[Abstract] 



The loess of this country has usually been referred to one period. This paper 

 presents evidence of the existence of four distinct loesses in Iowa and adjacent 

 territory — that is, post-Kansan, post-Illinoisan, post-Iowan, and post-Wisconsin. 

 These loesses were not contemporaneous with the respective drifts, but followed 

 the recession of the ice of each drift-period after an interval during which residual 

 gravels and sand dunes or soils (all but the last now buried) were formed. Each 

 post-Glacial period therefore produced residual gravels, sand dues or mucky soils, 

 and finally loess. 



The distribution and characters of the several interglacial deposits are discussed 

 with special reference to the probable conditions of climate, drainage, and floral 

 covering during the deposition or formation of each. 



PELE AND THE EVOLUTION OF THE WINDWARD ARCHIPELAGO 

 BY ROBKRT T. HILL 



The paper is printed as pages 243-288 of this volume. 

 The President declared the scientific program closed. 



