ilar to the lignone of the woods. This was confirmed by a
well-marked reaction with ferric ferricyanide with increase of weight
due to the fixation of the blue cyanide.

But the most characteristic feature is the high yield of furfural on
boiling with condensing acids. The following numbers were determined:

Total furfural from original fibre 14.84
In residue from alkali hydrolysis 11.5
In cellulose isolated by Cl method 10.4

Treated with sulphuric acids of concentration, (a) 92.1 grs.
H_{2}SO_{4} per 100 c.c., (b) 105.8 grs. per 100 c.c., the fibres
dissolve, and diluted immediately after complete solution it was
resolved into

(a) (b)

Reprecipitated fraction 68.7 43.7
Soluble fraction yielding furfural 13.2 14.3

By these observations it is established that the furfuroids are of the
cellulose type and behave very much as the furfuroids of the cereal
celluloses.

This group of seed hairs invites exhaustive investigation. The furfuroid
constituents are easily isolated, and as they constitute at least
one-third of the fibre substance it is especially from this point of
view that they invite study.

RECHERCHES SUR L'OXYCELLULOSE.

L. VIGNON.

~Resume of investigations (1898-1900) of Oxycellulose, published as a
brochure~ (Rey, Lyon, 1900).

(a) A typical oxycellulose prepared from cotton cellulose by the
action of HClO_{3} (HCl + KClO_{3}) in dilute solution at 100 deg. for one
hour gave the following numbers:

C H O
Elementary composition 43.55 6.03 50.42

Oxycellulose Original cellulose
Analysis by Lange's method
Soluble in KOH (at 180 deg.) 87.6 12.0
Insoluble in KOH (at 180 deg.) 12.4 88.0

Oxycellulose Original cellulose
Heat of combustion 4124-4133 4190-4224
Heat evolved in contact with 50 times wt.}
normal KOH per 100 grms. } 1.3 cal. 0.74 cal.

Oxycellulose Cellulose
Absorption of colouring } Saffranine 0.7 0.0
matters at 100 deg. per 100 grms. } Methylene blue 0.6 0.2

(b) _Yield of furfural from cellulose, oxy- and
hydro-cellulo