198 Proceedings of the Wernerian Society. 



County of Sutherland, and particularly of the Birds observed du- 

 ring the excursion thither of a party of naturalists in the summer 

 of 1834. 



Professor Jameson communicated a brief notice of some Obser- 

 vations, by M. Arago, on the Light of Halley's Comet, finally de- 

 termining that cometic light is derived from the sun, and not de- 

 pendent on any kind of phosphorescence inherent in the comet it- 

 self. He also made some remarks on the experiments which have 

 been lately performed in France, on the Solidification of Carbonic 

 Acid, and recommended the repetition of these experiments, so im- 

 portant in a geological view. 



Dr Charles Anderson exhibited a specimen of CyprcEa guttata^ a 

 rare species, from Java ; and he also communicated a description 

 and specimens, of a new species of Cypraea, not described by La- 

 marck, and which he denominated C. castanea. The following is 

 the character : " Testa ovato-ventricosa, castaneo-fusca ; fasciis bi- 

 nis, latis, obscuris, saturatioribus ; marginibus incrassatis, albis, fus- 

 co-punctatis ; aperturee extreraitatibus intus roseo-rubeis." Shell 

 of a bright chestnut-brown colour on the back, the face and sides 

 white ; the latter marked with numerous spots of vivid brown of 

 various intensity ; the fauces brown, with a shade of red ; length 

 1^, breadth f, of an inch. Received from New South Wales, by 

 Dr Coldstream of Leith, without any notification as to its particu- 

 lar locality. 



There was also exhibited a male specimen of the Rocky Mountain 

 Sheep {Ovis montana)^ which Professor Jameson bad lately re- 

 ceived from the Colombia River from Dr M. Gairdner. He re- 

 marked, that although its fur was of no value, it ought to be intro- 

 duced into this country, not only from the delicacy of its flesh as 

 food, and the fine leather to be prepared from its skin, but also 

 from its noble figure. The Professor stated that he had many 

 years ago brought this animal under the attention of the Society ; 

 and it was to be regretted that no steps had as yet been taken to- 

 wards its introduction, it being, from its hardy nature, likely to 

 do well in our highland mountainous districts. 



Sir Patrick Walker exhibited a specimen of the ihoth Pka" 

 IcBna (^Geometra) papilionariaf taken last summer in Aberdeenshire, 

 and new to Scotland. He then made some remarks on its geo- 

 graphic distribution in England and on the continent of Europe, 

 and mentioned several places, in the latter, where it is found in 

 great abundance* 



