189 



on gneiss, with intervening layers of coarse conglomerate, but, 

 so far as known, without any fossils. He expresses no opinion 

 as to the age of the rock. Both from Bay's own description M 

 and from the specimens collected by him which I have seen, 

 it is clear, however, that the rock recalls, petrographically, 

 certain strata in the Jurassic beds of Jameson Land: a loose, 

 greyish yellow sandstone, consisting of grains of both quartz 

 and felspar, of a youthful appearance. That the rock is more 

 recent than Triassic seems probable to me from every point 

 of view. It is, of course, possible that it is even more recent 

 than Jurassic, i. e. that it belongs to the Tertiary or Cretaceous 

 system. Yet there seems to be no reason to assume this, and 

 on the map I have therefore marked it with the general colour 

 of the Jurassic beds. 



From the sea Bay thought he noticed a rock recalling the 

 Cape Leslie sandstone at a spot on the W. side of Jameson 

 Land. I am not quite sure that the rock in situ is visible 

 at all in that part from the sea, and, as we have seen, it be- 

 longs to the Jurassic formation. But if the opinion expressed 

 by me above is correct, then Bay is also right, even if in a 

 way be did not mean. 



7. The Tertiary Sedimentary Rocks. I am not going to enter 

 into the history of our knowledge about these deposits. For nearly 

 all we knew about the Tertiary rocks of E. Greenland prior to the 

 last Danish expedition we have to thank the German Polar Expedi- 

 tion, which discovered Tertiary fossiliferous strata at several places 

 near the most northerly part, then known, of the east coast. 

 On Sabine L, in the so-called Hasenberg, were found plant- 

 bearing strata, whose not very well preserved flora was shown 

 by Heer to be identical with the common Arctic Tertiary flora, 

 usually classed as Miocene. On Hochstetter Land there oc- 

 curred mighty banks with remains of marine mussels, of which, 



<) Medd. om Grønland, XIX, 162. 



