Vol. 67.] WEST, MID, AND EAST SOMERSET. 63 



the section to which Moore refers in the paragraph on the ' Holwell 

 Carboniferous Limestone & Liassic Dykes,' but except the state- 

 ment that in one of the dykes ' may be found occasional nests of 

 Rhaetic remains,' 1 there is nothing that claims our attention. 



Crossing the brook, and ascending the hill on the JShepton-Mallet 

 Road, we come upon an extensive disused quarry, on the left or 

 south side of the road. This is the well-known ' Microlestes- 

 Quarry ' of Charles Moore. 2 



From ' dykes ' here Moore obtained an extraordinary number of 

 vertebrate-remains, which are now housed in the Bath Museum. 

 Moore intended to devote a special paper to their description, but 

 unfortunately it never appeared. His dyke is localized now with 

 difficulty : but many vertebrate-remains, similar to those collected 

 by him, may still be obtained near its site — including the teeth of 

 the little mammal Microlestes. 



On the opposite side of the road to the ' Microlestes Quarry ' is- 

 an interesting one in the Carboniferous Limestone, in w hich, how- 

 ever, is a fine ' dyke,' from the sides of which numbers of teeth and 

 scales of Rhaatic fishes may be collected. Also, in a hollow exca- 

 vated out of the surface of the Limestone is White-Lias limestone 

 mixed with pale marl, in which are embedded subangular masses of 

 chert and extremely well-rolled pieces of Carboniferous Limestone, 

 covered with specimens of Dimyodon intus-striatus (Emmerich). 



Between Holwell and the neighbourhood of Hapsford Mills I 

 have not detected any deposit of Rhaetic age between the Carboni- 

 ferous Limestone and the Inferior Oolite. Near Hapstord Mills,, 

 however, there are some extremely interesting sections which were 

 noticed by Charles Moore and later by Mr. J. McMurtrie. 3 



The latter appends a section to his paper, showing the relations 

 of the beds in the three quarries on the east side of the brook at 

 Hapsford Mills. He distinguishes them as A, B, and C, — C being 

 that nearest to the by-road which gives access to the mills and 

 valley from the road to Elm. The quarry farthest away from the 

 by-road is the largest of the three, and according to Mr. McMurtrie 

 was the last to be abandoned. Here at the southern end, as this 

 author states, the Inferior Oolite rests directly upon the Carboni- 

 ferous Limestone (Joe. cit.); 



'but as the eye passes along the face of the quarry to the northward, atten- 

 tion is at once directed to a bed which comes in almost imperceptibly ' 



between the Limestone and the Oolite. 



' It consists of a fine conglomerate, occasionally brecciated, but more- 

 frequently containing waterworn pebbles, <nd it shows traces of fish-teeth 

 and scales.' (Op. cit. p. 105.) 



Masses of the conglomerate above described lie at the foot of the 

 mural quarry-face. The contained pebbles vary greatly in size,. 



Q. J. G. S. vol. xxiii (1867) p. 485. 



Ibid. p. 487 : see also Proc. Geul. Assoc, vol. xxi (1909) p. 221. 



Proc. Bath Nat. Hist. & Ant. F. C. vol. v (1885) p. 104. 



