The marine Caiboniferous of North-east Greenl. and its Brachiopod Fauna, olo 



(about 500 metres), the mountain is composed of a dense limestone, 

 rich in corals. 



Judging from the dip of the strata, the uppermost layers at 

 Depot 80 09' (Fig. 2) form the base of the Mallemukfjæld. As that 

 mountain, which is about 500 metres in height, also consists of lime- 

 stone, the total thickness of the Carboniferous formations can be 

 estimated as being at hast 700 metres. 



No faults have been observed within the Carboniferous form- 

 ations". 



From this communication of Mr. Jarner one must, with Nat- 

 horst, draw the conclusion that the plant-bearing beds occupy the 

 basis of the Carboniferous deposits of North-east Greenland, and 

 that the entire formation is probably a downthrow block outside 

 the boundary-fault of the Archæan "Horst". In Nathorst's opinion 

 there can be no doubt as to the age of these plant-bearing forma- 

 tions in their entirety, and he refers them to the Lower Carboni- 

 ferous, although the material available is too little and too badly 

 preserved to allow of any more detailed conclusions being drawn. 

 Nathorst compares several of the plant-species occurring here with 

 those found in the Lower Carboniferous of Spitzbergen. 



Mr. Jarner has, further, favoured me with some extracts from 

 Dr. Wegener's diary, which have been of great value for the unrav- 

 elling of the slratigraphical connection between the various localities, 

 and my account is based essentially on these communications, in 

 addition to the investigation of the material collected, both from a 

 petrologicai and a palæontologicai point of view. 



The collections are not specially extensive — numbering altogether 

 a little more than one hundred specimens — and, consequently, the 

 description of the sections, for instance, is somewhat imperfect, in 

 addition to which, the state of preservation of the fossils is some- 

 times rather poor. But material collected under such difficult cir- 

 cumstances, and conveyed some 600 km by means of dog-sledges, 

 from a district to which it can hardly be expected that a fresh 

 expedition will soon be sent, makes it the duty of the examiner to 

 make the most far-reaching deductions that are possible from the 

 specimens placed at his disposal. This is the explanation of the 

 circumstance that, in many instances, all the material or every fossil 

 obtained by the Expedition has been made the object of a special 

 mention. 



Throughout the work there is employed, given in italicised 

 figures, the numbering of the specimens which was made at the 

 Mineralogical Museum in Copenhagen, as, during the course of my 

 work, I made constant use of these numbers, and clearly perceived 



