lose (jute), so far as this can be
dealt with by the statistics of its more important decompositions
(original, pp. 157-161).

~Cellulose.~--There is little doubt that the furfural-yielding groups of
the original are isolated in the form of the beta-cellulose. Tollens
emphasises this fact in his studies of cellulose-estimation methods. We
had previously shown (original, p. 159) that the yield of furfural is
not affected by the _chlorination_, but it appears from our numbers that
only 50 p.ct. of these groups remain in the isolated cellulose, the
residue undergoing hydrolysis to soluble compounds. In a carefully
regulated hydrolysis following the chlorination it appears that the
furfuroids are almost entirely conserved in the form of a cellulose.

Moreover, an investigation of the products dissolved by sodium sulphite
solution from the chlorinated fibre has shown that they are practically
free from furfuroids. This enables us to exclude the furfural-yielding
groups from the lignone complex. At the same time, through our later
studies of the hydroxyfurfurals, it is certain that these products are
represented in the fibre substance and probably in the lignone complex.

~Chlorination Statistics.~--It has been pointed out by a correspondent--to
whom we express our indebtedness--that we have made a mistake in
calculating the proportion of lignone from the ratio of the Cl combining
with the fibre substance or lignocellulose (p.ct), to that of the Cl
_present in_ the isolated lignone chloride (p.ct.). The lignocellulose
combines with chlorine in the ratio 100 : 8, but the lignone chloride
_containing_ 26.7 of chlorine means that, neglecting the hydrogen
substituted, 73 of lignone combine with the 27 of chlorine
approximately. On the uniform percentage basis the calculated proportion
of lignone would be 8/37, or a little over 20 p.ct.

In regard to the proportion of hydration attending the resolution, we
have shown on constitutional grounds that this must be relatively small.
Assuming approximately the formula C_{19}H_{22}O_{9} for the lignone
residue as it exists in combination, and the anhydride formula for the
cellulose, these revised statistics now appear, as regards the carbon
contents of the lignocellulose:

Cellulose, 44.4 C; lignone, 57.8.
80 x 44.4 / 100 = 35.52
20 x 57.8 / 100 = 11.56
_____

47.08 p.ct. C in lignocellulose.

These conclusions ar