the Iron Ore lately found in Siberia. 5 2 g 
defcribed and figured in the XVIIth volume of Nova 
Commentary Petrofolitana. 
By the very firft iliips that will fail f rom this port in 
pnng, I 111 all take the liberty to fend you, for the Royal 
Society, whatever I have publifhed fince 1767, and feme 
“ cur.cn, ie, for ,h= Mnfe™. ,f ^2™! 
" “ 0, '“ of “™< PrctaSlon, from ,Lfo 
ferve wT u t0 th<5 S ° dety ’ 1 ^ be ready to 
lcrve with whatever I am able to fupply. 
XXXIV. On 
