X 



CONTENTS, 



XXIII. Description and Analysis of a . 



Specimen of Native Iron found 

 at Leadhills. By Mr H. M. 

 Dacosta, - Page 370 



XXIV. Mineralogical Observations in 



Galloway, By Dr Grierson, 873 



XXV. Lithological Observations on the 



Vicinity of Loch- Lomond, By 



Dr Macknight, - 392 



XXVI. Description of Ravensheugh, By 



Dr Macknight, - 404* 



XXVII. Hints regarding the Coincidence 



which takes place in the Pres- 

 sure of the Atmosphere, at dif- 

 ferent Latitudes, and at near- 

 ly the same Time, By the 

 Right Hon. Lord Gray, - 410 



XXVIII. An account of several new and 



rare species of Fishes, taken 

 on the south coast of Devon- 

 shire, with some remarks on 

 some others of more common 

 occurrence. By George Mon- 

 tagu, Esq. - - 41S 



