oe 
Chemistry and Physics. 265 
lent while we preserve the present formulas for organic compounds, 
The group of alcohols are referable to the common formula C,H, i 
(n being always two ora multiple of it) or ((CH),) nHH,O,. Wine 
alcohol being represented by C, H, O,, if we subtract from it (CH), 
there remains the formula of wood-spirit C, H, O,, and again subtract- 
ing (CH),, there is left H, O, or water. 
In conclusion we would again call attention to the fact mentioned in 
ge 119 of the last number; M. Liebig states that 
mee intes the alcohol, we are now put in possession of a process by 
f i f 
12. On Xyloidine, Pyroxyline, and some analogous products ; by 
F. Dumont and Men DREL, (Compt. Rend. des trav., d&c., Aug., 1847, 
from Recueil des tray. de la Société d’Emul. pour les Scien. Pharm., 
12\H,,4,)O,,. It is therefore guadrinitric lignine. ‘This sut 
Stance is white, burns readily, and dissolves with ease in fuming nitric 
Acid; it is identical with the xyloidine of M. Braconnot. 
The soluble part precipitated by water, gave numbers corresponding 
fo the formula, Cy, H,,0,,+6NO,, or as above, C,.(H,, 45 )O;25 
Which represents sexnitric glucose. 
he same chemists have also obtained quintinitric mannite, Co 
E 1g O I0NO,, or C,(H, X,)Og. © prepare this, carefully 
Purified and dried mannite is gradually added to fuming nitric acid, 
taking care to cool the vessel so as to prevent the evolution of red 
Mercurial salt, 
. It requires for detonation a violent blow between two hard bodies ; 
it may be placed on paper and touched with a red-hot coal, and fused 
