IX. Remarks on a Mtnerat from Greenuanp, supposed 
to be CrRYSTALLISED GADOLINITE. By Tuomas 
Autan, Ese. F.R.S. Ep. 
[Read 21st November 1808]. 
NON a parcel of minerals which I procured laft fpring, 
there are fpecimens of two very, rare fofflils ; one of them, 
the Cryolite, the other I believe a variety of the Gadolinite. 
_ The former, is accurately defcribed in the different mineralo-- 
gical works, and I have little to add to the information con- 
tained inthem. But the Gadolinite appears to be very imper- 
feétly known, and has never yet been defcribed as a crystallifed. 
foffil. 
_ Tue minerals in queftion were found on board a Danith: 
prize, captured on her paflage from Iceland to Copenhagen, and 
were fold with the reft of her cargo at Leith. On examination, 
I was furprifed to find they correfponded fo little with the fof- 
fils which are ufually: brought from that ifland, and confe- 
quently endeavoured to trace from the fhip’s papers, any parti- 
culars that might lead to the knowledge of their geographic 
~ origin. All I could learn was, that they were fent. from Davis’ 
Straits by a Miffionary. 
_I consipeEr this limited information, however, fufficient to 
fix on the coaft of Greenland as the place from whence they 
had- 
