222 OCCURRENCE OF GYPSUM IN THE 



though, from what I have premised, there is little hope of finding any very 

 extensive beds in the immediate vicinity of the present quarry. 



List of Specimens forwarded hy Dawk Banghy. 



'i. No. 1.— Is a specimen from the quarry, and will serve to give an idea 

 of the best picked quality. (Art. 5.) 



Nos. 2 and 3. — Are specimens of fragments from the bed of the 

 stream. (Art. 7.) 



Nos. 4 and 5. — Are specimens of the mass found in angular debris. 

 (Art. 7.) 



No. 6. — Contains imbedded fragments of associated rocks. 



POSTSCRIPT. 



Since first drawing up this paper, I have had access to one by 

 M, Brochant, on the gypsum of the Alps, which it appears, till he under- 

 took the examination of it, was considered to be a member of the primary 

 class of formations. M. Brochant finds this opinion untenable; and 

 from a large induction, he thinks himself entitled to conclude, that all the 

 masses of gypsum in the Alps which he has examined, (and which he par- 

 ticularly remarks are superficial,) with whatever rocks associated, belong 

 to one fera— an sera later than that of the newest of the rocks it accom- 

 panies. Now, in one of the lime-stones of this association, he has detected 

 organic remains; so that if his conclusion of the cotemporaneous forma- 

 tion of these apparently unconnected masses be sound, they become, at 

 once, referable to an sera posterior to that of primary formations. This 

 so far confirms my view of the origin of Himalaya gypsum. 



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