£8 Mr. Hatchett's Analysis of 
F. 
The acetous acid has not any apparent effect on the white 
precipitate, when long digested with it. 
G. 
The fixed alkalis readily combine with this substance, both in 
the dry and in the humid way. 
We have already seen, that the former method was employed 
with success in the analysis of the ore; and the experiments 
made with the blow-pipe may be regarded as an additional con- 
firmation. In each of these cases, the white precipitate com- 
bined with the alkali, as soon as the heat was sufficient to cause 
the latter to flow ; and, when a carbonate was employed, a 
portion of carbonic add was expelled. 
The carbonic acid was in like manner disengaged, when the 
white precipitate was boiled with lixivium of carbonate of pot- 
ash, or of soda ; and the solutions thus prepared, resembled in 
every respect those which were formed by dissolving in water 
the salts which had been produced in the dry way. 
It will be proper here to give a more particular account of 
these combinations. 
i. Some of the white precipitate was digested, during nearly 
one hour, with boiling lixivium of pure or caustic potash : about 
one-fourth of the powder was dissolved ; and the remainder, 
which appeared little if at all altered, subsided to the bottom of 
the vessel. 
The clear solution, which contained a great excess of alkali, 
was decanted ; and, by gentle evaporation, yielded a white glit- 
tering salt, in scales, very much resembling the concrete boracic 
acid. 
