456 NEW LAND. 



of Jones Sound several deposits can be determined, although Devonian 

 is there the prevailing formation. On account of the proximity to it 

 of our winter quarters, it was possible to examine this area during 

 the summer months, and consequently acquire comparatively better 

 collections. 



At a greater distance from winter quarters, namely Store Bjornekap, 

 was a rich Carboniferous limestone, from which Captain Sverdrup and 

 I succeeded in bringing back a fair quantity of material on our return 

 from a long sledge-expedition. 



The other and more northerly points in Heureka Sound, the rocks 

 or formations of which are indicated in the following sketch, I visited 

 only while on spring sledging-expeditions. The observations were 

 cursory, and made in haste, and the material brought back was exceed- 

 ingly incomplete. The most important among this are specimens of 

 the eruptive rocks frequently to be met with in these tracts, as 

 well as some fragments which point to the existence hereabouts of 

 Carboniferous, Alpine, Trias, and Tertiary. The most important col- 

 lection of this latter formation was, however, brought back by Herr 

 Simmons and Captain Isachsen, who visited Baumann Fjord in the 

 spring of 1902 for the express purpose of collecting fossils. It was 

 here that Captain Baumann observed coal the previous year, bringing 

 back with him a few fragments of silicified wood and lignite. 



ARCH.EAN EOCKS 



occur on the south and east coasts of Ellesmere Land, from Havne- 

 f jord in Jones Sound to the inner part of Hayes Sound, and also on 

 the east side of the inmost part of Bay Fjord. In every place where 

 examination was possible they consisted of sometimes peculiar 

 granite and gneiss-granite. 



Crystalline schists are not found in the tracts adjacent to Hayes 

 Sound or on the coast in the vicinity of Jones Sound, nor do they 

 occur in Foulke Fjord on the Greenland side of Smith Sound. 



CAMBRIAN, SILURIAN, AND DEVONIAN. 



At Cape Camperdown, on Bache Peninsula, is found granite over- 

 lain by an arcose-like, partly conglomerate sandstone, in flat strata, the 

 dip being north-north-west. Its thickness here probably does not 

 exceed 500 feet, though the contour swells to considerably greater 

 magnitude by reason of intrusions of Diabase occasioning an additional 

 thickness of perhaps 300 feet. At its upper part this sandstone merges 

 gradually, by interstratification, into a series of grey, sandy, and marl- 



