18Ö 



microscope proves to be quite crystalline, even if extremely 

 compact. Then I found a violet coloured, pliyllitic schist, that 

 revealed at the same time a conspicuous alternation of strata 

 and a very apparent cleavage. Nor were red rocks lacking: 

 there was both a coarse, vermilion sandstone with bright spots, 

 and a fine-grained, red, micaceous sandstone, the grains of 

 which, now rounded, now angular, consist largely of felspar, 

 while a red pigment colours the not very abundant inter- 

 mediate mass. 



The petrography of the series is obviously sufficiently un- 

 like the Fleming Inlet series, even if there were no other 

 reasons for believing it to be older, for us not to group 

 them together without further investigation. Nathorst men- 

 tions a loose stone of black chert from the Silurian area inside 

 the fjord, but beyond this 1 do not know of the recurrence 

 there of silicious rocks. In other respects, however, the pétro- 

 graphie conformity with these formations is sufficiently marked 

 for us to be able to assume that we may possibly have here 

 a recurrence of the Silurian-Devonian series. In any case this 

 С P'letcher formation is probably paleozoic. 



B. Rhaeto-Liassic and more recent sedimentary rocks. 

 (Sandstone and schists without conspicuous colour.) 



5. Rhaeto-Jurassic formations. In contrast to the rocks 1 

 have described above, which are always extremely poor in fossils 

 but which, despite their greatly varying ages, must all be 

 brought together in one pétrographie group, characterized partly 

 by the frequent occurrence of dolomitic, often oolithic limestones, 

 partly by the variegated, often red colours so frequently re- 

 curring in strata of the most heterogeneous character, we find 

 in these parts of East-Greenland also formations, most com- 

 monly richly fossiliferous, in which limestones are of insigni- 

 ficant occurrence, and the sandstones of which are always 

 light-coloured or colourless, while the more retiring schists 



