C 3* ] 
is preferred to all other iron, for many reafons, as 
daily experience demonftrates. 
Moft, but not all, iron ores are attraded by the 
loadftone ; the reafon feems to be for thofe, which 
are not attracted, that there are no native particles of - 
iron, or that the ore is not fufficiently mineralifed in 
therq. The SwediOi ores are almoft generally at- 
tracted by the loadftone; and from that property, not 
without reafon, many ftcilful mineralifts account for 
the excellency of the Swedifti iron. This moun- 
tain is fituated in a fandy traCt of land, of which 
the fand is extremely fine. Oppofite to it is a valley, 
through which a fmall river flows ; its perpendicu- 
lar height is above four hundred feet; its circum- 
ference half a Swedifti league, or three Englifli miles. 
The whole mountain is one mafs of rich iron ore, 
and even in fome parts is mixed with particles of 
native iron. Wallerius’s Mineralogy Species 254^ 
Variety 2d. fynonyms it Ferrum Mineralifatum. S. 
Minera ferri nigricans folida, Magneti arnica ; and 
Linnseus, Syftema Nature, p. 176. N° 9. Ferrum in- 
tradlabilc cinereo-fufcum, punCfis nitidis ; in which 
he contradicts this ore being attracted by the load- 
ftone, though all the fpecimens I have tried have 
been always attracted by it. The broken pieces glit- 
ter with ihining particles, fometimes placed in a 
fcaled, and fometimes in a ftriated manner. The 
neighbouring fmall rocks are of a greyifh ftone 
(faxum purum). About two hundred years ago 
(for fo long have they work’d on this mountain^ 
they blew up the mafles of ore; yet the mountain 
appears very little diminifhed, except in the laves or 
hollow places, which are at the foot of the moun- 
