Rhetic Foraminifera from Somerset. 507 
but the latter are not so clearly defined in outline as those of 
bed no. 5, and they are more fragmentary. 
(This sample appear8 to agree in part with no. 5 of 
Mr. Sanford’s section.) 
Bed no. 4.—A pale brown friable sandstone, coarsely 
laminated. It contains some clay, which is apparent on 
crushing the rock under water. The residuum, after washing, 
consists of brown and white sand-grains. ‘The coarser brown 
particles, when mounted in balsam and viewed under a 
tolerably high power, are scen to be in many cases more or 
less perfect examples of obscure arenaceous [Foraminifera 
belonging to the genus //aplophragmium. A single speci- 
men of Stachéia was also met with. The white sand is 
much finer and consists of sharp angular quartz-grains. 
Bed no. 5.—A blue sandy clay, with ochreous and ferru- 
ginous layers, which consist almost entirely of the remains of 
A small block of clay showing Stachere in regular layers at a@ a; from 
bed no. 5 of the Rheetic series, Wedmore. Reduced to } nat. size. 
Stacheia. These organisms form layers about 4 millim, thick, 
which conspicuously mark the planes of sedimentation. ‘This 
is shown in the woodeut, which is from a photograph kindly 
taken by my brother, Mr. R. 8. Chapman. 
The residuum, after washing, is 12 per cent. of he whole, 
22% 
