ON COLLOID CHEMISTRY AND ITS INDUSTRIAL APPLICATYONS. 35 
Scarpa, O., ‘ Koll. Zeitschr.,’ 1914, 15, 8. (Abst., ‘J.C.S., 1914, 100, IT., 720.) 
‘Umkehrbare Ueberfiihrung emulsoider Gummi- und Gelatinelésungen in den 
suspensoiden Zustand, und Higenschaften derartige Systeme.’ 
By addition of alcohol to solutions. 
Fiscurr, E., and FreupEensera, K., ‘ Ber.,’ 1913, 46, 1116. 
Hepta-(tribenzoyl-galloyl)-p-iodophenol maltosazone of molecular weight 4021 
obeys Raoult’s law in freezing-point determination in bromoform. 
Hartscuex, E., ‘ Koll. Zeitschr.,’ 1914, 15, 226. 
‘Die Gestalt und Orientirung von Gasblasen in Gelen.’ 
The bubbles formed in jellies are not spherical but lens-shaped, since the jellies 
tear, and the acute edge-angle is the weakest point. The question is discussed 
whether the jelly has geometric lines of cleavage. The answer is apparently negative. 
but in jellies undor pressure the split is usually normal to the direction of pressure. 
1915. 
OstwaLp, Wo., ‘ Koll. Zeitschr.,’ 1915, 17, 113. 
‘ Zar Kinetik der Multirotatién in Gelatinesolen. 
See also correction, ibid., 1916, 18, 32. 
MECKLENBERG, W., ‘ Koll. Zeitschr.,’ 1915, 16, 97. 
“Ueber die Beziehung zwischen Tyndalleffekt und Teilchengrosse kolloidaler 
Lésungen.’ 
Fiscuer, M. H., ‘ Koll. Zeitschr.,’ 1915, 17, 1. 
“Ueber Hydratation und Lésung bei Gelatine.’ 
*Gerix®, K., ‘ Koll. Zeitschr.,’ 1915, 17, 79. 
*Dampfdruck von Gelatine-Wasser-Gemischen.’ 
Upson and Catvny, ‘ J.Am.C.S.,’ 1915, 37, 1295. 
“The colloidal swelling of wheat-gluten. The swelling is increased by acids and 
repressed by salts, like that of gelatine. 
*AriszZ, L., ‘ Koll. Beihefte,’ 1915, 7, 1-90. 
‘Sol- und Gelzustand von Gelatinelésungen.’ 
A lengthy and very important paper. 
Powarntn, G., ‘J. Russ. Phys-Chem. Soc.,’ 1915, 47, 2064. (Abst., ‘J.S.C.I.,’ 
1916, 35, 429.) 
“Swelling of hides in presence of hydrogen ions.’ 
1916. 
Nacet, C. F., ‘ Jour. of Phys. Chem.,’ 1915, 19, 331. 
“On the peptisation of chromium hydroxide by alkalies.’ 
Wintcen, R., “Sitzungsberichte der chemischen Abteilung der Niederrheinischen 
Gesellschaft fur Natur- und Heilkunde zu Bonn,’ Jahrg. 1915. ‘ Coll.,’ 1916, 
15, 301. 
“Ueber das Gleichgewicht Gelatine-Salzsiure.’ 
By catalysis of methylacetate, Wintgen confirms Procter’s molecular weight 839 
for gelatine, and finds the hydrolysis K = 0-0004139. 
*Proctrr, H. R., and Wison, J. A., ‘T.C.S.,’ 1916, 109, 307, and ‘J.A.L.C.A.,’ 
1916, 11, 261. 
‘The Acid-Gelatin Equilibrium.’ 
Mathematical discussion of the equilibrium between the acid and ionising colloid 
salt. 
Ibid., ‘ J.A.L.C A.,’ 1916, 11, 399. 
‘ The swelling of colloid jellies.’ 
Ibid., ‘ T.C.8.,’ 1916, 109, 1328. 
‘Theory of vegetable tanning.’ 
Wuson, J. A., ‘J.Am.C.S.,’ 1916, 38, 1982. 
‘Theory of Colloids.’ 
A general theory of colloidal sols. 
Kusetxa, V., ‘ Coll.,’ 1915, 389. 
‘ Adsorption of organic acids by hide powder.’ 
