NATURAL HISTORY SOCIETY OF GLASGOW. 225 



tion of light. But the phenomenon is worthy of note ; and the 

 Society would do well to receive records of such meteorological 

 events, which too often escape notice. 



I may mention that the recent hail storm showed peculiar forms, 

 the drop resembling a cone upside down, the lamellae being 

 horizontal, like the petals of a rose, and similar in form. 



November 25th, 1873. 



Mr James Eamsay, Yice-President, in the chair. 

 Mr James Mcol Fleming of Keil, Argyllshire, was elected a 

 life member, and Mr W. Craibe Angus an ordinary member. 



SPECIMENS EXHIBITED. 



Mr J. A. Harvie Brown exhibited a rock specimen, from Xew 

 Zealand, containing a number of shells of recent or existing species. 

 Mr John Young, F.G.S., remarked, that the specimen was un- 

 doubtedly of recent origin, although consolidated into a hard 

 compound rock by the infusion of some silicious matter in solution ; 

 and he further pointed out that, from the absence of any such 

 solidifying agency in certain strata of Post-tertiary and other 

 formations, shells of a very much earlier date than those seen in 

 this specimen were still found embedded in material of a soft and 

 yielding nature. 



Mr James J. King exhibited a collection of specimens of 

 lepidoptera, from Rannoch, including Erebia epiphron; Coenonympha 

 typlion, three varieties ; Psodos trepidaria; Geometra jmpjilionaria; 

 Acidalia fumata, very common in the Black Wood ; Fidonia 

 pinetaria, very local, only occurring in one small locality ; Emme- 

 lesia ericetata and E. Uandiata; Coremia munitata; a beautiful variety 

 of Cidaria corylata, in which the ground colour was white and the 

 markings almost black ; and a very fine variety of EuhoUa palum- 

 baria, the colour of which was a dark slate with a chocolate tinge. 



PAPERS READ. 



I. — Notes on Archceocidaris, a Carboniferous Echinoderm, with 

 overlapping plates. By Mr John Young, F.G.S. 



My attention was recently directed to a review of Professor 

 Wyville Thomson's " Depths of the Sea," in the May number of 



