Correspondence. ]37 



portion of the glabella of a large individuaL This discovery com- 

 pletes the parallel both with the South Wales beds and also with 

 those near Dolgelly, though the number of species foimd in North 

 Wales still falls far short of those known at Porth-y-rhaw. The 

 fossils found by the author atTufarn-helig comprised Ag'nostesjormceps; 

 Microdiscus punciatus ; ConocorypJie variolaris ; Conocor. sp. Holocepha- 

 lina ; Erinnys ; TTieca ; Paradoxides Damdis, and some fragments 

 at present undetermined. Most, if not all of these had also previously 

 been found by Mr. Homfray, but as yet the beds have only been 

 very partially worked, and it may be confidently expected that many 

 other forms will be found there. 



In order to illustrate the position of the beds more clearly, and at 

 the same time to attach a more general interest to the paper, the 

 author gave a sketch of the main features of the geology of the 

 central portion of North Wales, extending in a north-westerly 

 direction to Snowdon and Llanberris, and east and south to the 

 Arenigs and Cader Idris ; i.e. to the country on both sides the Bar- 

 mouth and Harlech grits, which form the anticlinal axis before re- 

 ferred to. He also exhibited and explained three of the admirable 

 horizontal sections of the Ordnance Survey, on the scale of Gin. 

 to the mile, which relate to this district. 



Pal^ontographioal Society. — A meeting of this Society was 

 held on February 16th, at the apartments of the Geological Society 

 of London, Somerset House, for the purpose of presenting a clock to 

 Dr. J. S. Bowerbank, F.R.S., F.G.S., as a testimony of the high 

 esteem in which he was held by the members of the Society, and of 

 their appreciation of the services which he had rendered to Pal^on- 

 tological Science as the originator of the Paige ontographical Society, 

 and in having so well filled the arduous office of secretary for 

 seventeen years. A marble bust of Dr. Bowerbanlc had been 

 executed by means of subscriptions, and was, by the Doctor's 

 request, presented to the Geological Society. 



cozE^iaiBSiPOisriDE^rciE:. 



THE TEANSACTIONS OF THE ROYAL GEOLOGICAL SOCIETY OF 

 COENWALL. 



To the Editor of the Geological Magazine. 



SiK, — ^Having lately, for the first time in my life, had an oppor- 

 tunity of consulting the Transactions of the Eoyal Geological Society 

 of Cornwall, I have been surprised at the amount of information 

 contained in them. Among other matters connected with rocks and 

 veins, there are some which, at the present day, may be more gene- 

 rally interesting. As others may find as much difficulty in pro- 

 curing access to these volumes as I have hitherto done, I may 



