412 Froceedings of the Wernerian Society. 



tion; and> therefore, strictly speaking, a tabular, not a true stratified 

 structure. 



February 8. — Dr Charles Anderson, formerly V. P., in the Chair. Dr 

 Paterson read a paper on the manner in which animals, and more espe- 

 cially fishes, have been deposited or inclosed in secondarj' rocks. The 

 Secretary read Mr Thomas Geadell of Preston's account of the structure 

 and habits of the common Mole, Talpa Europcea, founded on the expe- 

 rience and observations of many years. A letter was read from Mr H. 

 M. K. Esmark (from Brevig in Norway), accompanying a specimen of 

 the rare mineral Thorite. 



February 22. — Dr R. K. Greville, V. P., in the chair. The address to 

 the Queen on the occasion of her marriage, agreed upon by the Council 

 on the 16th, was read and approved of. Professor Jameson gave an ac- 

 count of a new mineral, first noticed by Lord Greenock, which he pro- 

 poses to call Cadmium Blende, or Greenockite. (See this No. of the 

 Journal, p. 390). Mr Haj' Cunningham, read an essay on the Geognosy 

 of Arran and Lamlash, which was illustrated by numerous sectional draw- 

 ings and specimens. The following are the inferences which he has 

 drawn from his investigations : — 



\st, That the oldest stratified rocks of Arran consist of an alternating 

 system of clay-slate, mica-slate, and grej'wacke. 



2d, That a series of secondary strata rest upon these unconformably. 

 3f/, That the series mentioned is the independent coal-formation of 

 Werner. 



4:th, That an examination of the secondarj' strata of Arjan, and a com- 

 parison of these strata with the secondary strata of the south of Scotland, 

 demonstrate the incorrectness of the opinions of Professor Sedgwick in re- 

 gard to them, as these opinions are expressed in a paper published in 

 the Trans, of the Geological Society. 



5th, That the granite of Arran, though altering the structure of the 

 strata, has not positionally altered them. 



6th, That the stratified rocks of Arran and Lamlash arc traversed by 

 rocks of porphj-ry and greenstone. 



7th, That an examination of the unstratified rocks of Arran allows us 

 to fix their relative periods of formations, the result of such an examina- 

 tion being, that the granite is the oldest unstratified rock, the porphyry 

 next in point of age : while the trap, of which there are two sets, one an 

 older and another a newer, constitutes, with the pitchstone, the newest 

 rock of the island. 



8th, That the islands of Arran and Lamlash have been swept by at least 

 one large body of water. 



Dr Traill exhibited a specimen of native gold in quartz, found by him- 

 self at Wanlockhead, in the year 1802 ; and also some other rare British 

 minerals. 



