NATURAL HISTORY SOCIETY OF GLASGOW. 115 



pallustra, Corhula gibba, Aporrhais pes-pelicani. Among the Clyde 

 beds I have also found a layer containing shells, in which those of 

 the more southern type appear to exist in greater profusion and 

 perfection than even in our present seas. It is an open subject 

 for inquiry whether our climate was not slightly warmer than it 

 now is between the glacial epoch and the present day. Mr 

 Crosskey concluded his paper by sketching a classification of the 

 various clay beds according to their fauna, indicating the climatic 

 changes of the several geological epochs. 



April 25th, 1865. 

 John Scouler, M.D., LL.D., F.L.S., President, in the chair. 

 William Loch Stuart, M.D., was elected a resident member. 



SPECIMENS EXHIBITED. 



Mr John Shaw exhibited a collection of European Orthotricha, 

 with remarks on some of the species. 



Mr Alexander M'Kinlay exhibited specimens of the normal 

 form of OrtMricliwn Sturmii, from Stirling Castle rock and Abbey 

 Craig. In the former place he had found it plentifully, sometimes 

 intermixed with 0. rupestre. Among other rare species from new 

 localities, he likewise exhibited Eurhynchium crassinervmm, with 

 fruit, from the Abbey Craig, and Ambhjstegiam irriguum from near 

 Doune. 



Mr David Eobertson exhibited a new species of Cuma, which 

 was discovered last month on the shores of the Isle of Man by 

 Mrs Eobertson, and for which the Eev. A. M. Norman now pro- 

 posed the name of Cuma pygmcea. 



Dr Scouler exhibited a specimen of Thalassema Nepkmi, from 

 the Kyles of Bute. This species, according to Forbes in his 

 work on the British star-fishes, has been found hitherto only in 

 the south of England. 



PAPER READ. 



On the Bryology of the Campsie Hills and Neighbourhood. 



By James Stirton, M.D. 



In illustration of this paper, the author exhibited specimens 



of Orthodontium gracile, from Lennox Castle woods. Hitherto 



this moss has been known to grow only in Abyssinia, and 



