36 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [May 6, 



species collected by our author, during his short visit to Pabba, makes 

 it highly probable that, were the shales worked diligently, nearly all 

 the species of the Middle Lias of England would be found therein. 



3rd. The shells from the Lias of Scalpa are very meagre and in 

 bad preservation ; they consist of Pecten cequivalvis, Sow., Gervillia 

 incequivalvisl, Sow., and a Pleuromya. The position of the beds 

 which yielded these shells, as shown by the section (PI. I. fig. 2) 

 from Scalpa, through Guillimon and Pabba, to the road between 

 Breakish and Lussay, indicates that they may be the equivalent of 

 the Marlstone, and represent the Margaritatus-bed and Spinatus-bed 

 of the table at page 25 ; the size and form of the large Pecten like- 

 wise favours this opinion. 



Much good work might be done if these beds and those imme- 

 diately above them were carefully examined, as the species enume- 

 rated are not sufficient to prove that the beds are " Marlstone," 

 inasmuch as Pecten cequivalvis, Sow., is common to the clays below 

 the Marlstone, as well as to that rock itself. 



It is probable that the Upper Lias and Inferior Oolite will also be 

 found in the neighbourhood, for it has been already proved that the 

 lower division of the Inferior Oolite, characterized by Ammonites 

 Murchisonce, Sow., exists in Skye, as the type-example of that most 

 important fossil was found by Lady Murchison, in a nodule of mica- 

 ceous sandstone, at the base of a cliff east of Holme near Portree ; so 

 that doubtless the intermediate strata exist between Holme (Skye) 

 and Scalpa. 



May 6, 1857. 



Arthur R. Abbott, Esq., Hitchin, Herts, Lieut. -Gen. John Briggs, 

 Clayton, Sussex, and Capt. G. Harker Saxton, of the 38th Regt. 

 M.N. I., were elected Fellows. Dr. H. R. Goeppert, Professor of 

 Botany &c. in the University at Breslau, was elected a Foreign 

 Member. 



The following communication was read : — 



The Silurian Rocks and Fossils of Norway, as described by 

 M. Theodor Kjerulf, those of the Baltic Provinces of 

 Russia, by Professor Schmidt, and both compared with their 

 British Equivalents. By Sir R. I. Murchison, V.P.G.S., 

 F.R.S.,D.C.L., Pres. R. Geogr. S., &c. 



Introduction. — My former brief sketches of the Silurian rocks of 

 Norway * have recently been much improved and enriched by the la- 

 bours of M. Theodor Kjerulf, who has published an excellent memoir, 

 entitled " The Silurian Basin of Christianiaf." He has also addressed 



* Proc. Geol. Soc. vol. iv. p. 601 ; Quart. Journ. Geol. Soc. vol. i. p. 467 ; ibid. 

 vol. iii. p. 1; ibid. vol. xii. p. 161; 'Geol. Russia in Europe,' &c. ; ' Siluria,' 

 p. 319, &e. 



f Das Christiaa ; a-Silurbecken, chemisch-geognostisch untersucht. 4to, 1855. 



