; 
C 49 3 
III. An Analysis of a mineral Substance from North America, 
containing a Metal hitherto unknown . By Charles Hatchett, 
Esq. F. R. S. 
Read November q 6 , 1801. 
In the course of the last summer, when I was examining and 
arranging some minerals in the British Museum, I observed a 
small specimen of a dark-coloured heavy substance, which 
attracted my attention, on account of some resemblance which 
it had with the Siberian chromate of iron, on which at that 
time I was making experiments. 
Upon referring to Sir Hans Sloane’s catalogue, I found that 
this specimen was only described as “ a very heavy black stone, 
“ with golden streaks/' which proved to be yellow mica ; and 
it appeared, that it had been sent, with various specimens of iron 
ores, to Sir Hans Sloane, by Mr. Winthrop, of Massachu- 
sets. The name of the mine, or place where it was found, is also 
noted in the catalogue ; the writing however is scarcely legible : 
it appears to be an Indian name, (Nautneauge;) but I am in- 
formed by several American gentlemen, that many of the Indian 
names (by which certain small districts, hills, &c. were forty 
or fifty years ago distinguished,) are now totally forgotten, and 
European names have been adopted in the room of them. This 
may have been the case in the present instance; but, as the 
other specimens sent by Mr. Winthrop were from the mines 
of Massachusets, there is every reason to believe that the 
MDCCCII. H 
