XL ( 



704 INDEX. 



Torbanehill Mineral, 7, 173. 



Traill (Thomas S.), M.D. On the Torbanehill mineral, 7. 



u 



Urinary Secretion of Fishes, with some remarks on this secretion in other classes of animals, 543. 



V 



Vision. On the extent to which the received theory of vision requires us to regard the eye as a camera 

 obscura, 327. 



w 



Williams (C. Greville). On the volatile bases produced by the destructive distillation of cincho- 

 nine, 309. Researches on chinoline and its homologues, 377. 



Wilson (George), M.D. On the extent to which the received theory of vision requires us to regard 

 the eye as a camera obscura, 327. 



Wise (Thomas A.), M.D. Notes on some of the Buddhist opinions and monuments of Asia, com- 

 pared with the symbols on the ancient sculptured " Standing Stones" of Scotland, 355. 



END OF VOLUME TWENTY-FIRST. 



Neill & Co., Printers, Edinburgh. 



