1912. No. 8. THE QUATERNARY SECTION OF KILEBU. 9 
XXI. 
This layer has a thickness of 3 cm., and it is to be regarded as a 
true clay deposit of a grey colour sometimes shading off into brown or 
greenish tinges. Crumbling fragments of Mytilus edulis L. are rather 
abundant, and fragments of Pecten islandicus Mix. are by no means rare. 
XXII. 
This layer having a thickness of 21,5 cm. is to be regarded as a 
true Mytilus-deposit being chiefly composed of a shelly material of 
crumbling fragments of Mytilus edulis L. It is of a grey colour or in 
some places nearly violescent. The lower half of the layer is especially 
almost pure from any other admixture. Only quite a trifle of clay is to 
be seen, and, as a rare exception fragments of a small variety of Pecten 
islandicus Müri. may be met with as well as Saxicava pholadis L. 
juv. The upper half of the layer is of nearly the same character, only 
that there is a little more clay, the occurrence of Mytilus edulis L., 
Pecten islandieus Miri. and Saxicava pholadis L. jwv. being quite the 
same as in the lower one. In the uppermost part of it, however, there 
is a conspicuous difference as well in composition as in regard to the 
character of fossils. There is a larger amount of clay, sometimes formed 
into lense-shaped or wedge-like portions of quite the same material as 
in the top-layer and coloured with the same brown or reddish shades. 
At the same time we meet with some interesting organic remains such 
as Lepeta caeca Mitt. and Natica clausa Bron. & Sows. Buccinum sp. 
of different species and varieties is not rare. Some few small fragments 
of Macoma sp. were also found, and it is highly interesting that this 
small variety of M. calcaria Cuemn. is closely allied to M. torelli 
STEENSTR. It may also be noted as an interesting fact that most of the 
specimens of Saxicava pholadis are distorted. 
XXIII. 
This layer has a thickness of 16 cm. It may be designated as a clay 
deposit, though it is in some places more sandy or even rather gravellous, 
nor are stones of different size rare. For the most part, however, it is 
a rather fine clay of a somewhat chocolate colour, There is no trace 
to be seem of fossils of any kind, but, in some scattered places HCl 
gives a slight reaction. 
