rv 



CONTENTS 



OF 



VOLUME TENTH. 



I KslUj f-'L 

 PART FIRST. 



Page 



I. On the Existence of Two New Fluids in the Cavities of 



Minerals, which are immiscible, and possess remark- 

 able Physical Properties. By DAVID BREWSTER, 

 LL.D. F. R. S. Lond. & Sec. R. S. Edin. 1 



II. Observations on the Comparative Anatomy of the Eye. 



By ROBERT KNOX, M. D. Member of the Werne- 

 rian Society, and of the Medico-Chirurgical So- 

 ciety of Edinburgh, - 43 



III. Notice of an undescribed Vitrified Fort, in the Burnt 



Isles, in the Kyles of Bute. By JAMES SMITH, Esq. 



of Jordanhill, F.R.S. Edin., - 79 



IV. On the Formation of Chalcedony. By Sir G. S. MAC- 



KENZIE, Baronet, F. R. S. Lond. & Edin., 82 



V. Notice respecting the Vertebra of a Whale, found in a 



Bed of bluish Clay, near Dingwall. By Sir G. S. 

 MACKENZIE, F. R. S. Lond. & Edin. In a Letter to 

 Dr Brewster, Sec. R. S. E. &c. - 105 



VI. Description of Hopeite, a New Mineral from Alten- 



berg, near Aiae-la-Chapelle. By DAVID BREWSTER, 

 LL.D. F. R. S. Lond. & Sec. R. S. Edin., - 107 



