Pl^OCEEBINGS OP THE GEOLOGICAL SOCIETY. lOJ 



Mr. IlFDLESTOif said tlie question was really one of evidence, 

 and, till the section had been examined by several persons, it was 

 difficult to come to a conclusion. In Prof. Harkness's section the 

 limestones were in anticlinals, in Dr. Hicks's they were synclinals. 

 How was it that these Pre-Cambrians had a N.E. strike ? Prom 

 their mineralogical character the rocks of the moor of Eannoch 

 could not in fairness be correlated with the Pebidian. 



The Peesident said that the subject was a difficult one to under- 

 stand clearly. Dr. Hicks, no doubt, had much experience in 

 these older rocks. The Scotch surveyors, with most careful work, 

 had not yet been able to come to a definite conclusion on many 

 points, and the country had not been all surveyed and mapped. 



Dr. Hicks said that the Callander rocks, said to be altered by 

 Prof. Judd, were not altered. Mr. Hudleston had forgotten that 

 he had already pointed out that the Pre-Cambrian groups had dif- 

 ferent strikes. The limestones belonging to the unaltered series 

 were easily distinguishable from those belonging to the metamorphic 

 rocks, though hitherto they had been confounded with one another. 

 The unaltered rocks occurred in broken synclinal folds in each of 

 the areas examined, and very frequently contained fragments from- 

 the immediately underlying metamorphic rocks. 



The following specimens were exhibited : — 



A specimen of Argonauta, exhibited by E. Charlesworth, Esq., 

 E.G.S. 



Eocks and fossils exhibited by Dr. Hicks and Mr. Marr in 

 illustration of their papers. 



June 23, 1880. 

 Eobeet Etheeidge, Esq., E.E.S., President, in the Chair. 



Edwin Muir, Esq., M.Inst.C.E., 10 Wellington Street, Higher 

 Broughton, Manchester ; Benjamin Sykes, Esq., C.E., Winckley 

 Square, Preston ; and John Thorburn, Esq., Ditton, near Widnes,- 

 were elected Eellows of the Society. 



The names of the following Eellows in arrear to the Society were- 

 read out by the President for the second time, in accordance with 

 Section YI. B, Article 6, of the Bye-laws :—E. G. Dyke, Esq., 

 H. H. Gunn, Esq., Jonathan Harrison, Esq., J. T. Johnson, Esq., 

 W. J. Lancaster, Esq., and L. T. Lewis, Esq. 



The List of Donations to the Library was read. 



The following communications were read : — - 



1. *' On the Skull of an Ichthyosaurus from the Lias of Whitby, 

 apparently indicating a new Species (/. zetlandicvs, Seeley), pre- 

 served in the Woodwardian Museum of the "University of Cam- 

 bridge." By Prof. H. G. Seeley, E.E.S., E.G.S. 



