The upper 8 inches consist of a dark brown rock. Over this lies Black Shale. 126 - A short distance from 887 the last locality, at the most northern part of a strong curve in the road, the top of the Lower Silurian is seen at 887. Below the top of the Lower Silurian consists of 3 feet of a hard stone, unlike the Madison rock below. It is massive but contains no chert. The Chintir shews more frequent bedding and is cherty. It is here 6 ft thick. 3 ft 6 in of Lower Asford shale are exposed. The Coriferous is 5 ft 6 in thick. The lower part is grey crimi- cidal and is 4 ft 4 in. thick. The Upper Asford joint is dark brown and is 14 in. thick. Resting on the Cor- iferous is Black Shale. 125 A short distance further, wes, two thirds of a mile from the church at Raywick, the Black Shale rests on the Coriferous at 892. The Upper dark brown Conifer- ous is 22 inches thick. Of the grey coriferous 18 inches are exposed. It may have been thicker. 12H 875 at the northeast side of Ray- wick. One square east of the church, the top of the Lower Silurian is exposed at 875. The upper 5 ft. 6 inches of the Lower Si- lurian are formed by a hard rock, unlike the Madison below and dif- ficult to distinguish from the Chintir above. The difference is this. The Lower Rock is finer, is found in thicker layer, quite mas- sive, and free from chert. The Chintir consists of layers about 6 inches thick, with thin layers of chert on the upper surface of these layers, and with some