INDO-GANGETIC TRACT OF MOUNTAINS. 223 



I ought to add, that, in mineralogical character, as far as that can be 

 fixed by description, the gypsum of the Alps bears the closest resem- 

 blance to that of the Himalaya. Add to this, that they are, in both cases, 

 found in superficial masses, which can hardly be called either beds or 

 veins, that they are apparently independent and limited in extent. 



XIV. 



I 



