METALS. 85. Ferrum. 269 



inetecrkum. Amorphous, of a granular texti^re, outwardly covered 

 with a black fcoriac^ous cruft, internally afhy giey 

 mixed with minute fhining particles, falling from the 

 atmofphere. 



Phiiofophtad Tranfafl. \%0z. part \. f, 174 183, 



^homfon chem. 3. ^. 416. 



Meteorc Iron, Sonverhy Brit. min. 2, t, lOI. 



jPound at M^cU Cottage in T^orkflyire, in Scotlandy various parts of 

 ihe continent, and in America and Siberia, where they have 

 been depofited by the buriling r-f meteors : at firit, when 

 they fall from the atniolpheie, th-y are faid to be hot, and 

 theT delcent to be cccompcnied with a loud explofion and 

 hiffing noife: they are found of v-ncus magnitudes from a 

 few ounces 'o feveral tons in weight : the outer furface is 

 rough and indented, and covered with a thin black cruft, as 

 if it were burnt ; internally they are of a fine granular tex- 

 ture, which m?.y be eafily crumbled to pieces with the nail, 

 of an afhy grey colour intermixed with fmall (hinng yellow 

 particles, and diicovcring an earthy fmell : they are flightly 

 magnetic, and fometimes exhibit fine veins of iron : fpec fie 

 gravity from 3,352. to 4,281 : a piece of the Yorkfhirc ftone 

 contained in 150 parts, filica 75, magnefia 37, oxyde of iron 

 48, oxyde of nickel 2, leav.ng an excef^ of 12 fnmi the ab- 

 foTr^on of oxygene during the procefa of anai^fation, 

 i^oivard.^ 



^ha!yheum» Attracted by the magnet, reducible to grains, black with 

 a black ifreak, of a compadl texture and common 



form. 

 Fen um compacliffimum. Syft. nat. xii. 3. p, I 37, v. 4, 

 Mineraferri folida, WalLfyJt z /►. 237. n 4. a. 



Found at the bafe of the mountain JJrdjumJki in Siheriay and in 



the mines of Siwde/i : it (Irikes fire with Heel and is ma!Ie- 



, able after fufion: contains from 50 to 60 per cent, of good 



iron which is convertible into the beft kind of fteel, and a 



little fulphur, 



i(k3um» Attracted by the magnet, reducible to grains, black with, 

 a black (freak, of a very finely granular texture ancj 

 common form. 



Ferrum folidefcens. Syft, nat. xii. 3. p, 137. «. 8. 

 Ferrum miners nigricanre. Wall. lyfi. 2. />. 437. n. 4, b« 

 Magnetic Iron ftone. Kirnx an mineral 2^. 158, 

 ' Comm n Iron ore. Berkenh. outl />, 265. 



Magnetic Iron ftone, Schmafser miner, z. p. 850 

 ^agnetic Iron ftone, Thomjon chetn. /^, p, 53. 



