. V' ^ 
PROCEEDINGS 
OF THE 
ROYAL SOCIETY OF EDINBURGH. 
SESSION 1853-4. 
CONTENTS. 
Monday , December 1853. 
PAGE 
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 , 19^ 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 William 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 , 3d January 1854. 
On the supposed Sea-Snake cast on shore in the Orkneys in 
1808, and the Animal seen froiprH.M.S. Daedalus in 1848. 
By Dr Traill, . Sr>' • ; . . 208 
Donations to the Library, . . 216 
[Turn over. 
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