1853.] MORRIS — LINCOLNSHIRE DRIFT. 317 



tate, in the absence of authentic specimens, to extend the Silurian 

 limestone so far*. 



We may now then definitely colour the shores of Wellington and 

 Barrow Straits, except the eastern entrance of the latter (which is 

 occupied by igneous or crystalline rocks), as Upper Silurian ; and on 

 the return of the expedition under Capt. Belcher, the limits of this 

 formation will be no doubt greatly extended. 



I may mention that coal or lignite was picked up at Byam Martin 

 Island, and that a fragment of it occurred in the detritus, 350 feet 

 above the sea, at Kate Austin's Lake, Cornwallis Island. Also at 

 Griffiths' Island and Browne Island fragments of iron were found. 



And, in conclusion, it is worth while to observe the occurrence of 

 pleistocene deposits with marine shells of existing Arctic species 

 (iliya truncata, Saxicava rugosa, &c.), which were found on every 

 elevation up to 500 feet on Beech ey and Cornwallis Islands. 



June 15, 1853. 



Robert Philips Greg, Jun., Esq., Edward Wray Winfield, Esq., 

 B.A., and Prof. R. Harkness were elected Fellows. 



The following communications were read : — 



1. On some Sections in the Oolitic District of Lincoln- 

 shire. By John Morris, F.G.S., Professor of Geology and 

 Mineralogy, University College, London. 



[Plate XIV.] 



The following observations relate to a series of Sections exposed 

 during the progress of the cuttings of the Great Northern Railway in 

 Lincolnshire, and which are considered to be of sufficient interest to 

 be laid before the Society, inasmuch as they afford some novel points 

 connected vrith the Oolitic series, and also some interesting phse- 

 nomena relating to the Drift. As many of the sections are now 

 covered up, and as they occurred in a district where good and deep 

 sections are comparatively rare, a brief record of their general cha- 

 racter will be useful to those whose future investigation may lead 

 them to examine the local phsenomena more in detail. 



Th& line of country traversed by the railway between Grantham 

 and Peterborough being occupied by a portion of the lower oolites 

 (which are here diminished in breadth), exposes the following members 

 of the oolitic series, some of which have not been previously noticed as 

 occurring in that district, in ascending order : — Lias, Inferior Oohte, 



* In the collection of rocks from Melville Island, in the Society's Museum, a 

 specimen of the compact limestone and a coral {Favistella Franklini) occur : the 

 latter was " collected by Lieut. Liddon, second in command in the Expedition of 

 1819-20," and presented by Dr. Granville, F.G.S. 



