ON COLLOID CHEMISTRY AND ITS INDUSTRIAL APPLICATIONS. 59 
6 Thomas & Prevost, D. R. P., 85564 (1895). 
7 Harrison, Journ. Soc. Dyers 3 Cols. 31, 198 (1915). 
S Lange, Farber Zeitung, 197 (1898). 
* Hiibner & Pope, Jowrn. Soc. Chem. Ind., 22, 70 (1903) ; 23, 410 (1904). 
10 Hiibner, Zbid. 247, 110 (1908). 
11 Gladstone, Trans. Chem. Soc., 1'7, (1862). 
2 Crum, Jbid., 16, 406. 
18 Vieweg, Ber., 40, 3576 (1907); 41, 3269 (1908). 
14 Miller, Ber., 40, 4903 (1907); 41, 4297 (1909); 48, 3430 (1910). . 
18 Clayton Beadle & Stevens, Jowrn. Soc. Dyers 5° Cols., 30, 244 (1914). 
16 Briggs, Papier Fabrikant, 5, 2644 (1907). 
Cross, Papier Zeitung, 38, 3246 (1908). 
18 Wichelhaus & Vieweg, Ber., 40, 441 (1997). 
 Piest, Zeit fur angew Chem., 22, 1221, 2012 (1908). 
0 Berl, Zeit fur Schiess and Sprengwesen, 4, 81 (1909). 
*1 Copley, Journ. Soc. Dyers & Cols., 24, 72 (1908). 
** Green, ibid. 24, 72 (1908). 
*3 Hiibner & Teltscher, Jowrn, Soc. Ind., 28, 641 (1909). 
*4 Miller, Ber., 728 (1911). 
25 Hiibner, E. P., 12455 (1908). 
26 Harrison, HE. P., 16276 (1908). 
*7 Palmer, EH. P., (1909), September. 
*8 Crum, Zrans. Chem. Soc., 18, 404 (1863). 
9 Frankel & Friedlander. Mitl. d.k. Tech. Gew. Mus, Wien, 326 (1898). 
30 Minajeff, Zeit. Farben. Ind., 1 and 17 (1908). 
31 Minajeff, Zeit. fur Farben and Textile Chem., 2, 257 (1903); 4, 81 (1905) ; 
6, 309, 345, 15, 233, 16, 252, 19, 309 (1907); %, 1 (1908). 
32 Haller, ibid. 8, 125 (1907). 
33 Haller, oll. Zeit., 20, 127 (1917). 
4 Justin Mueller, Zeit. fur Farben and Textile Chem., 3, 251, 332 (1904). 
% Knecht, Journ. Soc. Dyers 5 Cols., 24, 68 (1908). 
36 Knecht, ibid., 24, 107 (1908) 
37 Knecht, ibid., 12, 89 (1891). 
38 Leighton, Journ. phys. Chem. 20, 32, 188 (1916). 
Hydrocellulose. 
Hot dilute mineral acids hydrolyse cellulose forming a pulveru- 
lent substance termed ‘hydrocellulose’ 1~““ and a sugar having the 
same reducing power and optical activity as glucose.1@ '* 
Denham and Woodhouse!” by the hydrolysis of methylated 
cellulose have obtained methyl glucoses. This points definitely to 
the conclusion that glucose is formed by the hydrolysis of cellulose, 
although Cross!’ considers this to be still an open question. 
The author has shown that hydrocellulose may exist in several 
different colloidal states and has suggested that it is a form of cellu- 
lose containing adsorbed reducing bodies. Guignet’s soluble cellu- 
lose”’ is probably a similar form of cellulose not containing reducing 
agents. 
: The action of chemical reagents on a solid structure would 
obviously be to attack the exposed surfaces and dissolve them away, 
gradually reducing the size of the solid particles, with consequent 
modification in colloidal state. 
(E) Hydrocellulose. 
Cross & Bevan, Cellulose. 
Schwalbe, Die Cellulose, p. 211. 
Girard, Ann. Chem. Phys. (5) 24, 42-370 (1881). 
Vlechsig, Zeit. Physiol Chem. J, 523 (1883). 
Vignon, Comp. Rend. 126, 1355 (1888). 
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