EX AMI-NATION OF THE BARK OF MONESlA. 161 
Insoluble Residue from the preceding Treatments. 
The ligneous portion resulting from these different treat 
ments was still reddish, it was submitted— 1st, to the action 
of dilute muriatic acid; 2d, to potassa ; and 3d ? to calci- 
nation. 
Earthy Phosphates, and Malate of Lime. 
By means of acidulated water, we isolated a certain quan- 
tity of calcareous salts, which were precipitated by saturating 
the acid by ammonia in excess,— the deposit contained malate 
of lime, which was easily recognised; and after its calcination, 
we found phosphate of lime mixed with traces of phosphate 
of magnesia. 
Peetine, or Pectic Jicid. 
In treating the residuum by the alkaline water from pure 
potassa, we have separated, among other distinct substances, 
peetine, or pectic acid. 
Oxides of Iron and Magnesium. 
Finally, the residuum, submitted to two treatments and 
well washed, was calcined, to destroy all the ligneous fibre, 
which constituted the greater part of it. There remained some 
traces of phosphate and carbonate of lime (coming from the 
malate) not removed by the acid, oxide of iron, and traces of 
manganese and silica. 
Aromatic Principle. 
A certain quantity of Monesia was distilled with water, and 
the product cohobated several times; the liquid collected had 
scarcely a sensible odor. Agitated with pure sulphuric ether, 
and this vehicle separated by decantation, we had, after com- 
plete evaporation, a residuum slightly greasy to the touch, 
almost imponderable, and of a peculiar aromatic odor; the 
very smallest proportion of this product, in other respects 
VOL. VII. — NO. II. 21 
