NICKEL. 
After the ore phage nse has been roafted with 
Pee expel fome of the arfenic, 
ne powder, and treated with nitric 
a aaa by the lead in the ftate of fulphat and arent 
o much nitrat of lead be added, the lead 
may be precipitated by adding {mall portions of fulphuric 
or rather fulphat of foda, till no more precipitates take 
place. The folution now contains nickel, iron, and perhaps 
cobalt and copper. The copper may be feparated by a 
clean bar of iron. ‘The folution muft now be Bee with 
oxyds pure p added, the et of cobalt will ‘be 
diffolved, while that af “nickel will be left in a ftate of pu- 
rity. e oxyd of nickel is now to be made into a pafte 
with oil or fat, and introduced into a crucible, with fome 
black flux. The crucible fhould be lined with charcoal, and 
provided with a clofe cover; the whole muft be heated 
ftronely in a {mith’s forge for more than an hour. On 
cooling a button of pure een will be found. 
This metal, as has been arked, is of an agreeable 
white colour, poffe fling confiderable ee and luftre. 
7 aia Rape is about 8.3, which increafes with ham- 
s faid to be capable of being hammer 
the we not ae than ;3,dth of ani He 
rally believed to be magnetic, like iron. 
a temperature lefs than 160° of Wedgewood. It poffeffes 
ae valuable property of not being changed by expofure to 
the air, nor by immerfion in water, at the common tempera- 
tur en, however, it is expofed to a tolerable heat, it 
becomes tarnithed, and ultimately covered with oxyd. 
much ftronger heat fets this oxygen free, as is the cafe with 
the noble metals. 
The oxyds of nickel at prefent known are two, namely, 
opinion whether the green oxyd be {ft or fecond oxyd 
Dalton feems to be uncertain as to this point, the ato 
of oxygen being 7. And fince = analyfis of Richter gives 
ft LF 8 es 
grey oxyd the firft oxyd, = i and « 
73x 7 
= 24.81, 
the weight of the atom of nickel. If it be confidered as 
the fecond oxyd, then = = C and + = 49.62, the weight 
of the atom of nickel. 
fecond oxyd, from the number he gives for nickel agreeing 
alfo with the fulphuret. We have 
third or black oxyd, wil: be 50 epee to 21 oxygen, or in 
300, ‘there will be qo of nickel, and 30 
fiding 
f 
water. When this hydrat is heated to A spi the water 
is is feparated, leaving the grey oxyd. n the oxymuriatic 
acid gas is pafled through water woes with the latter oxyd, 
it becomes converted into the blac 
lc Wea are indebted to Mr. 
phur 
fulphuret muit be confidered as 2 atoms of fulphur, 2 x 13 
50+ 26 00 
to 1, of nickel, 50, for eevee, or 34.2 oxygen to’ 
65.8 nickel. This very ftrongly rvs the truth of the 
a san 50 for the weight of th m of this metal. 
the fame authority there baie a be another ful- 
ae formed by heating the grey et with fulphur, con- 
of 56.5 nickel, and 43.5 oxygen. is will be 
2x ; 3 to 50, which gives 43.8 fulphur, and 56.2 nickel. 
Nothing can be more fatisfatory dah this almoft exaé 
semen between theory and Lae The firft fulphuret 
will be 13 to 50, or in 100, 20.6 fulphur, and 79. 4 nickel. 
According to the authority oF ‘Thenard, phofphoru 
bines with nickel in the proportions of 17 ahah kane: to 
83 of nickel. iui would firft pega 
50 to Q, or ger cent. 15.3 Maree and roles ickel. 
The 
fufible alloy with it a be of importance. 
atchett in the se ape of 11 go 
d of the colour of 
Sir H. Davy {peaks highly a it alloy with iron ; 
its colour approaches filver as the nickel prevails, while t 
eer aera of the iron is not impaired. It is alfo lefs liable 
o ruft than iron. The fame author obferves that iron in 
sneeeane see is alloyed with nickel from 1.4 to 17 per 
cent. of the latter. 
ar fe Nickel, or the Combination of its oa with Acids.— 
e few fa in poffeffion of combina- 
tions of this fubftance with acids, are not ftriGily to’ be relied 
upon, from the circumftance of the experimerits being made 
upon eee nickel. 
with theory. The pene which unites with the acid is doubt- 
lefs the grey; hence 34 + 50 + 14 will conftitute the falt, 
or or 34 acid to rok oxyd. This will give ger cent. 34.7 acid, 
nd 65. ‘3° of bake 
Muriat o Nickel —The muriatic acid a&s feebly one 
nickel. ith the aid of nitric acid, however, it become 
er hone and the muriatic acid diffolves it, forming a eee 
folution, which at firft cryftallifes in the form of rhomboidal 
prifms. Thefe are foon aah upon by the air, and ee 
ely 
