﻿584 ME. A. WILMORE ON THE CARBONIFEROUS [N~OV. ICJIO,. 



Fig. (>. Cyathophyllum aff. murchisoni, M.-E. & H. Crag Laithe Quarry. 



Transverse section. (See p. 575.) 

 Figs. 7 & 8. Syringopora reticulata, Goldf. Troller's Gill. Fig. 7. Section 



transverse to the extension of the corallites. Fig. 8. Longitudinal 



section. (See p. 582.) 



Plate XLL 



Fig. 1, Syringopora reticulata, Goldf. Troller's Gill. Longitudinal section, 

 X 12; to show axial tube and aborted septa. (See PI. XL, fig. 8.) 



2. Syringopora reticulata, Goldf. Troller's Gill. Transverse section,. 



X 12 ; to show aborted septa. (See PI. XL. fig. 7.) 



3. Syringopora reticulata, Goldf. Elboltou. Longitudinal section, about 



two-thirds of the natural size. (See p. 582.) . 



4. Same section, X 8, to show the axial tube. 



Discussion. 



Dr. A. Yaughan expressed the pleasure that the Author's account 

 of a difficult region had afforded him. Confining his attention to 

 the palseontological portion of the paper, he remarked that the 

 small number of fossils that he had seen from the limestone-massif 

 suggested something below D, but were insufficient to fix the age. 

 On the other hand, the forms figured from Rylstone left no doubt 

 that the beds were of Cyathacconia (D 3 ) age. It seemed therefore 

 probable that there was a non-sequence between the massif and D 3 . 

 Concerning the identification of corals by slicing, he remarked 

 that although, for full acquaintance with a species, it might be- 

 necessary to enquire into its early life, yet, for mere identi- 

 fication, single sections of the adult were usually quite sufficient ; 

 cases of really deceptive identity, especially among the more highly- 

 developed corals, were relatively of uncommon occurrence. He- 

 further congratulated the Author on the photographs of corals 

 thrown on the screen. 



Mr. Cosmo Johns remarked on the many difficulties that attended 

 any attempt to investigate the area which the Author had described,, 

 and commended him for his courage in facing thern. Not only were 

 the rocks shattered and folded, but the thick mantle of Drift added 

 to the complexity. It was not clear, from the account given, how 

 the occurrence of S 2 beds had been determined. The speaker, 

 during his visits to the district, had found great difficulty in 

 recognizing with certainty any of the subdivisions that he had 

 worked out in the area north of the faults. He considered that the 

 estimate of thickness given, though much less than that of previous 

 workers, was still excessive. He would ask the Author whether 

 he considered the 'reef-knolls' of Cracoe to lie on the horizon of 

 the Pendleside Limestone, and strongly insisted on that term being 

 retained for the thick limestone that occurred below the grit of 

 Pendle Hill and Longridge Fell. He had satisfied himself that this 

 Pendleside Limestone was the equivalent of the Main or Upper 

 Scar Limestone of Ingleborough, and was therefore of Upper 

 Yore dale age. 



Mr. E. G. Caerutheks said that, during a brief visit under the 

 guidance of the Author to a part of the area described, he had been 

 much impressed with the structural complications and the unusual 

 nature of the coral assemblages. One of the most interesting 



