1913] SOME CLAY DEPOS1TS IN THE S.-E. PART OF NORWAY 33 



Portlandia arctica, is spread over a vvide area. And, the very 

 same fossil-bearing clay deposit may even be traced far up the 

 Valley of Glommen as I have even succeeded in collecting well 

 preserved epidermis of Portlandia arctica near the bridge of 

 Sjølikvern in the parish of Aasnes (Norsk geologisk tidsskrift, 

 Vol. II (1913), transactions of 1910, p. 2). As already mentioned, 

 however, we nowhere find this sheet of clay developed on that 

 large scale as in the neighbouring vvide plain of Romerike. This 

 interesting clay deposit of the Portlandia- stage I have been 

 successfull enough to trace even in the Valley of Aker in the 

 neighbourhood of the town of Christiania as I have succeeded 

 in collecting fragments of the shells of Portlandia arctica in 

 a clay-deposit near the electric car station of Skaadalen. 



Printed 6. july 1914. 



