464 ON THE MINERALOGY OF THE FAROE ISLANDS. 



I may remark, that we found compact zeolite in a stalacti- 

 tic form, evidently of recent formation, and deposited from 

 water, in the same way as stalactites of lime. 



We observed some hair zeolite, which, when pressed, gave 

 out a milky fluid. 



Believe me, dear Sir, very truly yours, 



W. C. TREVELYAN. 



To Dr Brewster. 



XXXIII. 



