tSB G^logical Society : — 



vol. XXX vii. p. 507) the very same experiments to prove the same 

 fact, and give it as their own. 



As regards the second paper. In six months after its publication, 

 Messrs. Favre and Silbermann {Annales de Chimie et de Physique, 

 vol. xxxvii. p. 484) prove the same truth with the same experi- 

 ments, using exactly the same metals, and give their memoir as 

 producing an original idea. 



I notice these coincidences here as being remarkable, and because 

 the propositions contained in the paper referred to are the ground- 

 wrk of the present experiments, and also with a view to prevent 

 an unconscious repetition on the part of Messrs. Favre and Silber^ 

 mann. 



GEOLOGICAL SOCIETY. 



[Continued from vol. xi. p. 553.J 



May 28, 1856. — Colonel Portlock, Vice-President, in the Chair, 



The following communications were read : — 



1. " On the Silurian Rocks of Wigtonshire." By J. C. Moore, 

 Esq.. F.G.S. 



The objects of this communication were, — 1st, to point out a 

 remarkable arrangement in the rocks which form the peninsula 

 between the Mull of Galloway and Corswall Point ; and, 2ndly, to 

 show the relative positions of the graptolitic schists of Wigtonshire 

 and of the coarse conglomerate and limestones of Ayrshire. The 

 author had already shown in a former communication that the rocks 

 from the Corswall Lighthouse for a great distance to the south have, 

 in the main, a southerly dip ; and that, after passing to the south of 

 Port Patrick, the dip is found to be reversed, that is, to the north. 

 By subsequent visits to this coast, Mr. Moore has been enabled to 

 offer a detailed account of the numerous anticlinal and synclinal 

 folds, exhibited more or less perfectly along this coast -section, a 

 distance of more than 30 miles. These foldings of the beds have 

 the anticlinals (the arches of which are occasionally preserved) 

 thrown northward along the northern portion of the section ; their 

 shorter or northern sides being vertical or nearly so, and their 

 longer or southern sides being inclined at varying angles, often not 

 more than 30°. The opposite conditions obtain in the southern 

 portion of the section towards the Mull of Galloway. Sometimes 

 the flexures are very numerous ; in one place as many as fifteen 

 occur in five miles. 



On the east side of the Bay of Luce the coast-section, parallel to 

 the above, affords confirmations of the same structure. The strata 

 are undulated, with the axes of the folds toward the south, and the 

 long sides of the folds gently dipping northward. The east coast 

 of Loch Ryan may be regarded as a northern i)rolongation of this 

 section, and, in conformity with the Corswall Point section, exhibits 

 a section of rocks folded over towards the north. 



At Corswall Point, and in the corresponding section in Z/}ch 



