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. H2SO4 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.
Résumé 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 HClO3 (HCl + KClO3) in dilute solution at 100° for one hour gave the following numbers: