[ 444 ] 
Mercury is placed in this table among the Me- 
tals, by reafon of its near agreement with thofe 
bodies in its fpecific gravity 5 tho* it otherwife fo 
widely differs from them in mod of its properties. 
Brafs is confiderably condenfed by hammering 
whether Gold, Silver, and the other Metals are alfo 
condenfed in like manner, hardly appears yet to 
have been fufficiently tried. 
Of the mixed Metals, hardly any except Brafs, 
appear to have had their fpecific gravities very care- 
fully afeertained : bell-mctalfprinces metal, however, 
and fome others, might deferve to be examined in 
that particular. 
It might poffibly be queried alfo, whether feveral 
mixed Metals do not either rarifie or condenfe upon 
mixture, fo as thereby to acquire a different fpecific 
giavity, than the natural law of their compofition, 
at firft feems to require. 
It may laftly beobferved, that the fpecific gravities of 
all the known Metals are fuch, as that none of them 
come up to 20 times the weight of common water, 
or fall fenfibly below 7 times the fame weight. 
Of Minerals , Semimetals , Ores, Preparations 
and Recrements of Metals , &c. 
TABLE II. 
BISMUTH. J.C. 
D°. Cotes 
D°. or Tinglafs. Boyle. 
. 9.700 
. 9-ffo 
Tynglafs, 
. 9.859 
