12 P. A. Øyen. 



If the specimen of norite-rock, above mentioned, should 

 really prove to have no parallel, except the occurrence of 

 that rock in the central part of Jotunheimen, this fact 

 is interesting as a proof of removal from great distances. 

 A. proof of such a removal from a rather great distance, 

 we also had the occasion to view when regarding the occur- 

 rence of specimens of different types of sparagmite from 

 central Norway, some types of which are, in no way, different 

 from such rocks as often met with in the region of Ron- 

 derne; moreover, the grey quartzite wdth a yellowish tint 

 is, when viewed with the naked eye, exactly similar to a 

 sparagmite-rock, which I have found constituting part of firm 

 rocks near Urdaaen on the west slope of Ronderne. An- 

 other proof of such a removal from a rather great distance, is 

 the occurence of several erratic blocks of quartz-conglomerate 

 in the neighbourhood of the gravel-pits near Frydenhaug. 

 This type of quartz-conglomerate is found to constitute part 

 of the earth's crust in the central district of Østerdalen. Near 

 the bridge of Vollebæk, I also found specimens of the black- 

 coloured hyperite, which is often met with among our Archæan 

 rocks, for instance in the district of Solør, between Elverum 

 and Kongsvinger. In the very next neighbourhood of the 

 bridge of Vollebæk, near the cottage of Aakebakken, I 

 found one specimen of the typical labrador-porphyrite from 

 the region of the Lake of Alunsjoen, characterized by needle- 

 shaped figures, the cuttings of table-formed crystals. This 

 fact forms another proof of a transportation nearly due south. 



When viewing the results of this investigation as to 

 direction of glacial movement in the neighbourhood of Chri- 

 stiania during a certain period of the Glacial Age, we may 

 draw the conclusion, that at the time of deposition of the 

 moraines and fluvio-glacial deposits of the line, Svelvik- 



