f From the Lower Mioceue strata at Disco we collected fossils 

 at Flakkerkuk, and near Mudderbugten, Isungoak, Ujarasusuk, 

 and Iglosungoak. These localities are not to be compared with 

 Atanekerdluk for richness in fossils. 



III. b. — Ipsorisok strata. — By this name I designate the thin- 

 nish layers containing fossils that occur imbedded in the basalt of 

 the high hills. Such strata have been met with at — 



Netluarsuk, between Noursoak and Noursak. A little north 

 of Atane the basalt sinks down to the surface of the sea, and 

 from a distance it is impossible to discover in the very regularly 

 stratified basalt-beds, ending at the shore with a vertical section of 

 several thousand feet, any sand or shalo beds. Neither do the 

 Greenlanders know of any other coal-beds in that neighbour- 

 hood than one which is met with at Netluarsuk, at an elevation 

 of about 1000 feet. The strata are here, for a distance of a 

 few dozen feet, exposed at a steep gorge between the basalt 

 hills. They seem to be of trifling thickness, and consist of 

 alternating beds of from 0*2 to 2 inches thick of sand, coal, 

 shale, and a ferruginous clay, different in appearance from the 

 ferruginous clay at Atanekerdluk, though, like it, full of fos- 

 sils, chiefly of Fir leaves and twigs, mixed Avith clay or coal. 

 Among these fossils occur not only leaves and cones, but also 

 seeds. The coal consists almost exclusively of flattened and 

 carbonized stems. 



Ifsorisok, about twelve miles from the coast, and 2250 feet 

 above the sea. We visited the spot from HoUandarbugten or 

 Itiblit, situated a little to the north of Niakornet. Some dis- 

 tance from the coast we first find thick layers of a rock, which 

 appears to be a much changed siliceous slate. Afterwards 

 the path proceeds up steep slopes of basalt detritus and basalt 

 rocks, or (at 2300 feet) extensive plains, covered with the same 

 material, and, at the period of our visit, I'ree from snow, though 

 hardly clothed with any vegetation. Here one has to pass long 

 distances over weathered and crumbling slabs of basalt, which 

 show that the underlying rocks are everywhere composed of 

 eruptive masses. From these plains considerable basalt hills rise 

 further inward, among which Kinnitok — a lofty mountain-ridge 

 between Niakornet and Ekkorfat — is the largest. This mountain 

 is probably 5000 or 6000 feet high, and, seen from a distance 

 appears also to be composed entirely of the eruptive rock common 

 in these parts. 



Somewhat beyond the spot where one passes the highest 

 point of the plains are some shallow valleys. In the slope of 

 one of them is the spot which formed the object of our visit. 

 The place betrays itself by large and small pieces of coal lying 

 mixed with the basalt detritus ; and, on digging here, sedimentary 

 strata, consisting of coal-seams some inches thick, sandy clay, and 

 fine, grey, hardened clay are discovered. The clay contains im- 

 pressions of plants, and among the coal flattened and imperfectly 

 carbonized tree-stems are met with. Silicified wood is also found 

 in the gravel. The schists are evidently of no great thick- 



