EXAMINATION OF THE BARK OF MONESIA. 155 
ing alcohol, with which it formed solutions of an intense 
green; after evaporation there remained a green substance, 
very fusible and a little solid. 
Crystallizable Fatty Matter. 
This substance dissolves in alcohol, and crystallizes by 
spontaneous evaporation in pearly laminae; it is fusible at 32° 
or 34°, Centigrade ; forms a pretty fixed web upon paper; 
potassa saponifies it easily; it appears to us to present 
the characters of stearine; the proportion of it was not 
great. 
Sugary Matter, ( Glycyrrhizine.) 
The proportion removed by ether, and separated from the 
residue by means of water, was filtered carefully, and gently 
evaporated ; it gave a product a little reddened, pulverulent, 
uncrystallizable, having the sugary taste of liquorice well 
marked: this substance presented to us all the characters as- 
signed to glycyrrhizine. 
Dissolved in water, and in the first place freed from all 
traces of tannin, by means of small layers of softened parch- 
ment thrown into the solution, it afforded a fluid, not capable 
of fermenting, of a very sweet taste, like liquorice, and in 
which potassa, acetate of lead, and especially chlorohydric, 
phosphoric, sulphuric and other acids, produced abundant ge- 
latiniform deposits. 
The precipitate produced by sulphuric acid, added in nota- 
ble proportion, was collected on a fine piece of linen, and care- 
fully drained; it was pulpy and brownish. We allowed it 
to remain in contact, for some days, with sulphuric ether, in 
order to separate it as much as possible from the excess of 
sulphuric acid. At the end of this time the ether had al- 
lowed to separate pearly crystals, and the precipitate itself 
had upon its surface a like crystallization; this precipitate, 
separated from all the ether, and dried by free hot air, was 
carefully treated with carbonate of baryta; we finished by 
carefully drying this mixture; we then heated it with alcohol; 
