PEOCEEDINGS 



OF THE 



ROYAL SOCIETY OF EDINBURGH. 



SESSION 1853-4. 



CONTENTS. 



Monday, 5th December 1853. 



fag:: 

 Remarks on the Torbanehill Mineral. By Dr Traill, . 199 



Notice of the Blind Animals which inhabit the Mammoth Cave 



of Kentucky. By James Wilson, Esq , . . 200 



Donations to the Library, .... 201 



Monday, 19th December 1853. 



Additional observations on the Diatomaceous Earth of Mull, with 

 a notice of several New Species occurring in it, and Re- 

 marks on the value of Generic and Specific Characters in 

 the Classification of the Diatomaceae. By Willi4*i Gre- 

 gory, M.D., Professor of Chemistry, . . . 204 



On the Physical Appearance of the Comet 3, of 1853. By 



Professor C. Piazzi Smyth, .... 207 



Tuesday, Sd January 1854. 



Ojj^ the supposed Sea-Snake cast on shore in the Orkneys in 

 1808, and the Animal seen from H.M.S. Daedalus in 1848. 

 By Dr Traill, . . . . .208 



Donations to the Library, . . . .210 



[Turn over. 



