1912. No. 8. THE QUATERNARY SECTION OF KILEBU. 7 
deposit, only consisting of fragments and broken shells of Mytilus edulis L. 
that have been laid down in thin layers of a soft shelly material of a 
somewhat tomentose character. 
XI. 
This layer having a thickness of 4 cm. consists of a rather fine 
clay of greenish-grey colour. Mytilus edulis L. may be traced, even 
in this layer though only in scarce fragments. Consequently there is a 
conspicuous difference from the Mytilus-layer at the bottom and at the 
top of it. 
XII. 
This layer that has a thickness of 11 cm. is of quite the same 
character as layer X, as well in regard to stratification as to composi 
tion. Beside Mytilus edulis L. we may also trace some few fragments 
of Pecten islandicus Mitt. Sand or clay material is scarcely to be 
traced. 
XIII. 
The thickness of this layer is 4,5 cm. The occurrence of Mytilus 
edulis L. is even here rather prominent and we may also trace some 
fragments of Pecten islandicus Müzr. This layer is, however, mixed with 
such a quantity of a rather fine clay of a reddish-brown or greenish-grey 
colour that it stands out prominently as a clay deposit. 
XIV. 
This layer that has a thickness of 9 cm. is to be characterized as a 
Mytilus-deposit, chiefly consisting of a soft somewhat tomentose material 
of shelly fragments of Mytilus edulis L. Some few fragments of Pecten 
islandicus Mitt. and Mytilus modiolus L. were also found. This layer 
is, however, considerably mixed with clay of a reddish-brown or greenish- 
grey colour. There was also seen even a whole lense of reddish-brown 
clay of quite the same type as that of the top-layer. 
XV. 
This layer has a thickness of 16 cm. and consists of a fine clay of 
a somewhat chocolate colour. No traces of fossils are to be seen, but 
in some scattered places HCl gives a slight reaction. Sections of a 
reddish-brown colour may in some places alternate with such of a 
greenish-grey one, and, in that way the whole mass often attains a rather 
streaked aspect and one may in some places get the impression, that 
