, 0.86; precipitated, 4.35; dissolved, 1.10. B,
insoluble, 0.76; precipitated, 5.11; dissolved, 1.54. It appears, from
the foregoing results, that the cellulose molecule, after oxidation, is
easily decomposed by potash, the insoluble and larger portion having all
the characters of the original cellulose, whilst the soluble portion is
of an aldehydic nature, and contains a substance, precipitable by acids,
which yields a relatively large amount of furfuraldehyde.

UNTERSUCHUNGEN UeBER DIE OXYCELLULOSE.

O. V. FABER und B. TOLLENS (Berl. Ber., 1899, 2589).

~Investigations of Oxycellulose.~

(p. 61) The author's results are tersely summed up in the following
conclusions set forth at the end of the paper: The oxycelluloses are
mixtures of cellulose and a derivative oxidised compound which contains
one more atom O than cellulose (cellulose = C_{6}H_{10}O_{5}), and for
which the special designation _Celloxin_ is proposed.

Celloxin may be formulated C_{8}H_{6}O_{6} or C_{6}H_{10}O_{6}, of which
the former is the more probable.

The various oxycelluloses may be regarded as containing one celloxin
group to 1-4 cellulose groups, according to the nature of the original
cellulose, and the degree of oxidation to which subjected. These groups
are in chemical union.

Celloxin has not been isolated. On boiling the oxycelluloses with
lime-milk it is converted into isosaccharinic and dioxybutyric acids.
The insoluble residue from the treatment is cellulose.

The following oxycelluloses were investigated:

A. _Product of action of nitric acid upon pine wood_ (Lindsey and
Tollens, Ann. 267, 366).--The oxycelluloses contained

1 mol celloxin: {2 mol. cellulose on 6 hours' heating
{3 mol. cellulose on 3 hours' heating

with a ratio H : O = 1 : 9 and 1 : 8.7 respectively: they yielded 7
p.ct. furfural.

B. _By action of bromine in presence of water and_ CaCO_{3} _upon
cotton_.--Yield, (air-dry) 85 p.ct. Empirical composition
C_{12}H_{20}O_{11} = C_{6}H_{10}O_{5}.C_{6}H_{10}O_{6}: yielded furfural
1.7 p.ct.

C. _Cotton and nitric acid at_ 100 deg., two and a half hours (Cross and
Bevan).--Yield, 70 p.ct. Composition

4 C_{6}H_{10}O_{5}.C_{6}H_{8}O_{6}

yielded furfural 2.3 p.ct.

D. _Cotton and nitric acid at_ 100 deg. (four hours).--A more highly
oxidised product resulted, viz. 3 C_{6}H_{10}O_{5}.C_{6}H_{8}O_{6}:
yielded furfural 3.2 p.ct.

_By-products of oxidation._--The liquors from B were f