﻿SUMMARY OF THE CONTENTS. 697 



mya-banks of the vicinity of Kristiania, namely that the dimate 

 at the time of their deposition must have been a proportionally 

 mild boreal climate. 



c. The Lowest Mya-banks in Smålenene; the Level Correspon- 

 ding to about 40—50 o/oo of Total Uplift. 



Pp. 289 — 294. Both in Smålenene and at Kristiania, shell- 

 occurrences are known at about all levels from the upper marine 

 boundary down to levels corresponding to about 40 *^/oo of the 

 total uplift. Below this level, littoral shell banks have hitherto 

 very seldom been found, until typical shell banks again occur 

 in abundunce at lower levels corresponding to the last part of 

 the rise of the land in true postglacial time. 



Of shell banks from a time when the land bad already 

 risen to about 50 *^/oo of the total uplift, only one occurrence is 

 at present known, namely from Ravnsjø in Smålenene. The 

 fauna of this shell bank (see the list, p. 290) nearly agrees with 

 the fauna of the higher shell-banks at Kristiania. 



Pp. 294—302. Comparison between the Fauna of the Mya- 

 banks in Smålenene and at Kristiania. 



This comparison shows that only the Mghest^ mya-banks 

 at Kristiania (level corresponding with 0—15 ^/oo of total uplift) 

 contain a fauna of a charachter as cold as the fauna of the 

 lofver mya-banks in Smålenene. Shell-banks of levels from 

 about 15 — 40 %o of total uplift, at Kristiania, contain a fauna 

 indicating a climate considerably ivarmer than the climate 

 which must have prevailed during the deposition of the lower 

 and lowest mya-banks of Smålenene. 



The upper mya-banks of Smålenene contain a fauna corre- 

 sponding with a climate as cold as that which we must con- 

 clude has prevailed during the deposition of the youngest arca- 

 clay of the Kristiania Valley, — a climate very similar to the 



