54 Mr. Hatchett’s Experiments on the various Alloys, 
removed ; and, when this was effected, the internal surface of the 
mould appeared corroded in some parts, and, as it were, inlaid 
by the mixed metal. 
Upon weighing the bar, it was found that only 15 penny- 
weights of the antimony remained combined with the gold ; so 
that three pennyweights and twenty-one grains had been dis- 
sipated. 
This metal was of a dull pale colour, not very unlike tute- 
nague ; it was excessively brittle, and in the fracture appeared 
of an ash colour, with a fine close grain, somewhat resembling 
that of porcelain. 
Experiment 11. 
To eighteen pennyweights and ten grains of the fine gold, in 
fusion, nineteen grains of copper were added, which being 
melted and well mixed, nineteen grains of antimony were also 
added ; after which, the metal was poured into a mould. 
The external colour of the button was like gold made stand- 
ard by copper ; it was very brittle, and, in the colour and grain 
of the fracture, resembled the result of the preceding experiment. 
Experiment in. 
Eighteen pennyweights and ten grains of the fine gold, were 
alloyed with one pennyweight and six grains of copper, and 
afterwards eight grains of antimony were added, to complete the 
standard proportion of alloy ; the mixture was then poured, as 
expeditiously as possible, into a mould. 
The ingot resembled that of the former experiment, in every 
particular, excepting that the grain of the fracture was more 
coarse, although it was still devoid of metallic lustre. 
