18 



POST-TERTIARY ENTOMOSTRACA. 



4. King Edward, Aberdeenshire. 



A shell-bearing silt is iu tliis section covered by a thick mass of Boulder Clay, which 

 is fossil if ero us in its lower porfion only ; but, as its base has not been exposed, it is 

 uncertain whether any Boulder Clay extends beneath it. 



Mr. Jamieson gives the following section, and remarks that the broken shells in the 

 lower part of the coarse upper drift appear to have been derived from the glacial marine 

 silt below, in which the shells are in situ. 



Feet. 



1 . Water- worn gravel and sand, stratified, often rather coarse and pebbly, 



and somewhat ferruginous. Contains no fossils . . 10 to 25 



2. Unstratified pebbly mud of a dark-grey tint, hard, and difficult to 

 pierce. The stones in it are of small size, but numerous, and some of 

 them are glacially scratched. In the upper part I could see no 

 shells ; but shell fragments occur in the lower part, increasing in 

 numbers towards the base. Some of the shell fragments show 



distinct traces of glacial action . . . . 20 to 30 



3. Fine brownish sand, in some places rich in shells. This sand is 

 interstratified with the upper part of the subjacent bed . . 1 to 2 



4. Fine dark-grey silt, free from stones, containing Arctic shells com- 

 plete, and apparently in sific This silt is very firm, as if much 



compressed, and the greater proportion of it consists of fine muddy 

 sand. The base of this bed has not been exposed, but it has been 



excavated to a depth of ten feet. No difference in the quality 



is to be seen to this depth ; no stones. The upper surface of this silt 

 is about 150 feet above the sea.^ 



Mr. Jamieson classes the fossils found at King Edward with the Paisley, Kilchattan, 

 and Gamrie groups, as being less intensely Arctic (as we shall also have occasion to 

 remark when describing the Ostracoda) than the Errol and Elie groups. 



Height above the sea 150 to 200 feet. 



' 'Quarterly Journal Geol. Soc.,' 1866, vol. xxii, p. 275. 



