[ 59 ] 

 XIV. Proceedings of Learned Societies. 



WERNERIAN NATURAL HISTORY SOCIETT. 



At the meeting on the 2Sth of March, Professor Jameson 

 read an account of a flcjetz gypsum formation, which oc- 

 curs on the banks of the White -adder, near Kelso. Like- 

 vyise of a beautihil flaetz qiiariz found in beds in the coal 

 districts of Fifeshire ; and of the occurrence of basalt, 

 atnygdaloid, and trap-tuff, in a coal-formation, newer than 

 the old red sandstone, and its accom|)anying porphyry, but 

 probably older than the general mass of the rock's of the 

 newest floetz-trap formation. — At the sanie meeting, Mr. 

 Leach read a description of the Pig of Orkney and^Shet- 

 land, which he inclined to consider as a distinct species. 

 And the Secretary laid before the meeting a very full 

 and interesting thermometrical Register and meteorological 

 Journal to Davis Straits and back again, kept by Mr. John 

 Aitken, surgeon. 



At the meeting on the nth of April, Dr. Macknight 

 read a mineralogical description of Tinto, a noted mountain 

 in Lanarkshire. It appears to be of floetz torp'ation; pro- 

 bably resting on the grey wacke which pervades the whole 

 mountainous districts in the south of Scotland. Around 

 the base is found conglomerate, containing rounded masses 

 of grey-wacke, iron-clay, flinty-slate, splintery hornstone, 

 quartz, felspar, mica,&c. Where the rock becomes finer- 

 grained, it approaches in some places to grey-wacke, and 

 in olhers to those portions of the old red sandstone forma- 

 tion which are conjectured to alternate with the newer 

 members of the Transition series. Over the cono-lomerate 

 masses of claystone, greenstone and greenstone passing- 

 into clinkstone and porphyry-slate successively appear^ 

 till we reach the summit, which, along with ihe'whoL' of 

 the upper part, is found to consist of compact ft-lspar and 

 felspar- porphyry. — The disposition of the rocks .n this 

 iiiouniain is conformable to the idea of secondary deposi- 

 tion, by assuming a finer and more crystalline texture as 

 they ascend ; and the occurrence of claystone and felspar 

 in a position corresponding to wfiat is observed on the 

 Eildon Hills, the Penllands,"the Ochils, Papa Stour, Dun- 

 dee, and in other places, seems to favour the hypothesis 

 of a particular overlying formation, in which these sub- 

 stances are prevailing ingredients, extending over a consi- 

 derable portion of the lower country of Scotland. 



In 



