Quart. Journ. Geol. Soc, Vol. LIX, Pl. XXIII. 



Fig. 1, 



X50. 



Fig. 2. 



SW^^M 



H. A. £., Photomicr. X 2 5 . 



Bemrose Ltd., Collo. 



Oolitic and Pebbly Carboniferous Limestone. 



