[ 242 ] 
85. Ferrum. 
Blueifh -grey ; very hard, tenacious, 
elaftic; exceedingly malleable; dudile > 
attraded by the magnet; melting in * 
while heat; i’oliible in all achls, and gi''" 
ing the folution a black colour when ve- 
getable aflringents are added to it: fpecifi'- 
86. Stannum. 
gravity 7,788. _ 
Silvery-white ; foftifh; very malleable and 
diidile; not fonorotis; flexible, and crack- 
ling when bent; melting eafily ; folubls 
in all acids, and giving the folution a bitter 
tafte : fpecific gravity 7,299. 
87. Plumbum. 
Blueilh-white ; foft ; not fonorotis; ver/ 
jnalleable, and a little diidlife and tena- 
cious; eafily melting, and during liqn^' 
fadion exhibiting iridefeent coioiirs on the 
fiirface ; foluble in all acids, and giving the 
folution a fweetilh tafte: fpecific gravity 
88. Niccolum. 
11,352. 
Reddiih-white ; hard; malleable; aftumrng 
89. ZiNCUM. 
a green colour when heated, and acquiring 
a purple tinge if the heat be continued , 
attaded by the magnet ; foluble in ad 
acids, and giving the folution a green 
colour: fpecific gravity g,ooo. 
Brilliant white with a ftiade of blue ; hardiftti 
a little malleable, but not dudile ; flightl/ 
fonorous ; of a fibrous or fcaly texture i 
taking fire when heated to a ftrong dcgreCf 
burning with a brilliant white flame and 
emitting light white flakes ; foluble in it" 
acids, and imparting no colour to the loin- 
tion: fpecific gravity 7,190. 
90. Bismutum. 
B- Brittle. 
Rcddifti-white, foft, brittle, of a lamel'a^ 
texture; eafily melting; taking fire when 
heat.d to a ftrong red degree, burning 
with a faint blue flame and emitting a yel- 
low fmoke; dcpolitiiig a white precipitate 
if its folution in nitric acid be diluted w'»rh 
W'ater: fpecific gravity 9,822. 
