Gl 



been despoiled from time immemorial for reducing into lime, 

 road mending, and other purposes. 



The species are the same, for the most part, as those now- 

 inhabiting the adjacent ocean, with the exception of Pecten 

 Islmidicus, which is said not now to exist on the Swedish 

 coast or further south than Trondjhem in Norway. They are 

 arctic in their general facies, and though from their position 

 above the glacial beds, they must undoubtedly be classed as 

 post-glacial, and marking the close of the extreme glacial 

 conditions on the land, yet the temperature of the sea could 

 have been but slightly diminished from that of the previously 

 more arctic conditions. 



The other locality that I visited, Lilla Herrstahagen, lies 

 about one mile east of Uddevalla. Though so short a 

 distance separates these two deposits, the molluscan fauna 

 differs in several particulars, but whether that difference 

 has been due to the character of the shore, or whether the 

 deposit is of a later age, is somewhat difficult to decide. 



This deposit is but of small dimensions when compared 

 with that of Kapellbackar. It nestles among the rocks at 

 some short distance from the road across some tilled land, 

 and it has been disclosed, apparently by the working of a 

 bed of sand and gravel which underlies the shell deposit. 



The shell bearing stratum is the uppermost, and of about 

 7 or 8 feet in thickness; the underlying beds, which are 

 unfossiliferous, are composed of about 3 feet of rougli pebbly 

 sand with rounded stones, and a thick sand-bed, showing 

 current bedding, the full depth of which has not been laid 

 bare; the whole depth of the section being about 25 feet. 



The shell bearing deposit consists mainly of the broken 

 tiud rotten shells of Mytilus edulis, but these have not that 

 thickened or distorted form which is seen at Kapellbackar ; 

 shells which occur frequently at the latter place are con- 

 spicously absent here, such are Astarte horealis, Tellina 



