1913] THE QUATERNARY SECTION OF FOSS 11 



material mixed with clay. It has a grey colour with a dash of 

 red or rusty brown. No reaction to HGI is to be seen. 



VI. This layer is a rather complex one having a thickness 

 of 25 cm. In ascending order it may be divided into: — 



a. Clay, fine and grey. 



b. Sand, fine and mixed with clay, it has a yellowish-grey 

 colour with a dash of red. The thickness of this layer is 

 15 mm. 



c. Clay, fine and yellowish-grey. This clay is laid up in 

 layers of the thickness of one millimetre arranged in groups of 

 one centimetre each. It gives a rather strong reaction to HC1. 

 Thickness 50 mm. 



d. Sand, fine and mixed with clay, it has a yellowish-grey 

 colour with a dash of red. The thickness of this layer is 15 mm. 



e. Clay, fine and grey. 



This whole complex series is conspicuously laminated. And, 

 as well the two layers of sand, b and d, as the two layers of 

 clay, a and e, gives a faint reaction to HGI. 



VII. This layer has a thickness of one centimetre and 

 consists of a sandy gravel of a reddish-grey colour. The gravel 

 gives reaction to HC1. 



VIII. This layer is somewhat variable in thickness, in the 

 visible section from two to eight centimetres as there are seen 

 depressions in the upper part of it. These depressions seem 

 to have been caused in some places by erosion in other ones 

 they look like indentations. This erosion or pressure has certainly 

 been connected with the deposition of the overlying layer. The 

 deposit here in question is finely laminated and consists of fine 

 clay of a yellowish-grey colour, lamination presenting layers of 

 a thickness of only one millimetre arranged in groups of the 

 thickness of one centimetre. This clay gives a strong reaction 

 to HGI. 



IX. This deposit has a thickness of 14 cm. and it is of a 

 somewhat variable colour, blue or grey. As well the blue mo- 

 raine as the bluish-grey variety of it gives a very strong reaction 

 to HCl. This morainic material is a mixed composition of 



