Mr. Schmeisser/s Account of a 
422 
EXPERIMENT XIV. 
A quantity of this substance was dissolved in muriatic acid, 
the solution much diluted with distilled water, and afterwards 
precipitated by diluted sulphuric acid. The precipitate was 
dried and decomposed by purified pot-ash, by means of heat. 
The earth which was thus separated, was perfectly freed 
from saline parts, afterwards dried and calcined, in order to 
deprive it of moisture. A quantity of this earth was again 
dissolved in acid, in order to ascertain the quantity of carbonic 
acid, or fixed air, which it contained, and the real proportion 
of pure earth contained in a certain quantity. 
I then found by accurate experiments, 
1st. That 100 grains of specific sulphuric acid required 133 
grains of the pure earth for saturation. 
sdly. That 100 grains of nitric acid required 94 grains, and 
3dly. That 100 grains of muriatic acid required 36 grains 
for saturation. Which experiment ascertained the dormant 
affinity of this earth to those acids. 
I also ascertained in the same way, 
1st. That 100 grains of sulphuric acid required 130 grains 
of barytes. 
edly. That 100 grains of nitric acid required 120 grains, and 
3dly. That the same quantity of muriatic acid required 96 
for saturation, which gave the dormant affinity betwixt the 
barytes and those acids. 
From these experiments I drew the following conclu- 
sions. 
1st. That according to experiment 1. the substance con- 
tained no saline parts. 
sdly. That according to experiment 11. it contained fixed air. 
