on as pi 3 
RHE—RHE 255 
"tive, a small portion of resin, mucus, tannin, gallic acid, a 
colouring matter, much oxalate of lime, and minute por- 
tions of alumen and silex. The Russian contains most 
eae etiquette resin; the Chinese most 
extractive and ic ac’ nieawe Wan iple 
RoC —* be Rieumia. According to the iments 
me John Henderson, in the Annals of Philosophy, 
Rheumic acid. M. De Lassaignes, believes 
that this is the oxalic acid, ey; 
of that of Mr. A. T . Thompson. Mr. 
inan of Rhubarb, athe 10Mb col. af th the 
perenne es Boe paar published in the of 
of neither notices the oxalic 
acid, nor any oxalate, as items of his « is; all other 
anal had i i its existence, been 
Bayen, Delaval, Vas those chemists i fens 
Mepicat Prorrnties ann Uses. ee re rie” pn oe 
Dj to 3ss. Neutral salts 
whether they add to its 
peculiar and valuable effe 
which these —. other 
