£6*5 KKW METAL NICKELI^E. 



night be caufed by the fubftilution of the potafh to the am- 

 monia mixed with the copper, which could not be feparated 

 but by the reduction per fe. 

 Only a fmall From thefe ideas I hoped to have at leaft four ounces of 



SSkdVa mafs P erfe< % P ure nickeI » b " 1 *"■ difagreeably furprifed by find- 

 was obtained, ing in the crucibles, which were deformed in the ufual "man- 

 ner, and perforated by the vitrified copper, a rough mafs 

 with the appearance I have before mentioned, and which 

 contained only a morfel of about two and a half drams, and 

 confequently only five drams of pure nickel in the t^. o cru- 

 Thedenfe ac- cibles. I reduced to powder in an iron mortar the remaining 



pompanying mafs (which could not properly be called fcoriae), and fepa- 

 matter was then \ , « , . , 



pulverized and rated from it by the tieve and the magnet, the particles of 



the nickel fepa- nickel which it might contain, which produced near two and 

 magnet and by a na ^ drams more; and that nothing might be loft, I treated 

 nitric acid. the powder with nitric acid, which attacked it vigoroufly at 

 plTeTfo^mafs 1116 firft > and S ave a button of nickel, but after that did not 

 gave no more act on it in the leaft, fo that the powder was but little dimi- 

 regulus. niftied in weight: in expofing this matter to reduction per fe, 



it produced no regulus, but merely agglutinated its parts. 

 Themafsbeing Having again pulverized the mafs, which weighed almoft 

 again powdered £t ounces> j m i xe( ] vvith it one ounce of charcoal in powder, 



was urged with ~ , . r .... 



charcoal, and anc l expofed to the nre of a porcelain furnace during eighteen 

 afforded more hours, in a crucible clofed with a luted cover, in a part of 

 weight of metal * ne f urnace which feemed to me to have moll heat. After 

 in one mafs. having broken the crucible, which was in a found ftate, I 

 found, under a fcoria of a deep blackiuVbrown colour, a well 

 fufed button of metal which weighed two ounces and three 

 quarters : it was not at all connected with the adjoining parts 

 of the fcoria, and had at its inferior part a particular fhape, 

 which was caufed by cavitios which were not produced by 

 the crucible. 

 It was fteel co- This metal had the grey colour of fleel, inclining a little to 

 lour, rather r ed : it prefented in its fracture a grain not very fine : it was 

 malieabJe^ mag- ralner nar d : could be extended a little under the hammer in 

 fical, &c. a cold ftate: heated to rednefs it endured little the ftrokes of 

 the hammer : it was attracted by the magnet, but not fo 

 ftrongly as either iron or nickel : it had many properties com- 

 mon to nickel, but it was diftinguifhed from it entirely by 

 others. As many of thefe properties were fuch, that thofe 



not 



