J. E. Marr — On the Coniston Limedone. 443' 



Ko specimens of marlstone Brachiopoda or Cephalopoda were 

 found in the Conglomerate bed. 



The results I arrive at are— (1) That the true Marlstone exists in 

 the lower part of the stone band containing its characteristic Brachio- 

 poda and A. spinatus ; the upper part being full of Bhynchonella 

 serrata, which is often overlain by a pink rock of the zone of 

 Bhynchonella Bouchardi. 



(2) That the conglomerate bed in the Bothenhampton section 

 is not older than the age of Ammonites bifrons — the zones of 

 Ammonites falciferum and Ammonites communis having been denuded 

 and their worn fossils deposited in this bed. That in other localities 

 the zone of Am. bifrons has been denuded. 



(3) That no fossils derived from the marlstone were found in the 

 conglomerate ; and as so many fine specimens of Bhynchonella serrata 

 were found, it is probable that the marlstone did not suffer denuda- 

 tion in this locality. We know from sections round Ilminster that 

 Bhynchonella serrata is only found in the upper part of the marlstone. 



(4) That the section at Bothenhampton showed that the zone of 

 A. jurensis formed the upper part of the rock band. 



In conclusion, I regret that want of material prevented my paper 

 being more complete ; but I must thank my Bridport friends for 

 their kindness in affording me facilities for examining these beds, and 

 hope that they will carefully record any excavations which may be 

 made in this interesting deposit. 



T 



III. — Further Eemarks on the Coniston Limestone. 

 By J. E. Makr, M.A., F.E.S., Sec.G.S. 



QUITE agree with Mr. Goodchild's statement in the July 

 Number of the Geol. Mag. that the stratigraphy of some of 

 the areas in which the Coniston Limestone Series is developed 

 "presents very considerable difficulties," so much so that in the 

 areas of Cross Fell and Settle portions of the "country might be 

 described as consisting of a gigantic fault-breccia," and that it is 

 necessary "to go over a large part of this faulted area again and 

 again " in order to interpret its structure. I do not know whether 

 Mr. Goodchild would class me amongst the " less fortunate " ones 

 who have not been over the ground again and again ; possibly I 

 have not devoted the amount of time which he has been able to 

 give to the study of the rocks of the Cross Fell Inlier, but it must 

 be remembered that Prof. Nicholson, with whom I had the pleasure 

 of working at this inlier, has returned to the ground again and 

 again during a long course of years, whilst more recently, he and 

 I have devoted several vacations to its study, and we have carefully 

 compared the beds and their fossils with those of adjoining and 

 more distant areas. Under these circumstances we are, perhaps, 

 justified in speaking with some confidence as to the order of suc- 

 cession of the series; for our knowledge of adjoining regions would 

 certainly lead us to place more reliance on the fossils of the beds 

 than on the apparent succession of the beds themselves, where the 



