34 REPORTS ON THE STATE OF SCIENCE.—1917. 
BACHMANN, W., ‘ Zeitschr. Anorg. Chem.,’ 1911, 73, 125-172. (Abst., ‘J.8.C.1.,’ 1912, 
82. 
: Ee tthtieen tiber die ultramikroskopische Struktur von Gallerten.’ 
Investigation into the ultramicroscopic structure of jellies. Brownian movement 
slackens as jellies become concentrated, and 7-10 per cent. jellies are quiescent and 
homogeneous. The structure is much finer than that observed by Biitschli, which 
may be reproduced by hardening agents. In solutions too dilute to set, ultramicro- 
scopic granular flocculation was observed. 
Ertner, W., ‘ Gerber,’ 1912, 38, 43. (Abst., ‘J.S.C.L,’ 1912, 31, 241.) 
Some reactions of tannins. Colloidal precipitates. 
*Patrrson, S., and WaLsum, L. E., ‘Compt. Rend. des tray., Lab. de Carlsberg,’ 9, 
1912, 200-286. (Abst. ‘J.S.C.1.,’ 1912, 31, 1140.) 
Optimal concentration of hydrogen ions in the first phase of the tryptic decom- 
position of gelatine. 
Werimarn, P. P. von, ‘ Koll. Zeitschr.,’ 10, 1912, 131. 
‘ Ultramikroskopische Structure der gallertartige Niederschlige und der Gallerte.’ 
Mostly polemic with Zsigmondy and Bachmann. 
*ZSIGMONDY, R., and BacHMANN, ‘ Koll. Zeitschr.,’ 1912, 11, 146. 
‘ Ueber Gallerten.’ 
Ultramicroscopic studies on soap solutions and jellies. 
Hartscuexr, E., ‘ Koll. Zeitschr.,’ 1912, 11, 158. 
‘Die Gele des Kamphorylphenylthiosemicarbamide.’ 
A jelly which gradually passes into crystals. 
Wermakrn, P. P. von, ‘ Koll. Zeitschr.,’ 1912, 11; 239. 
‘Ueber Gallerten.’ 
Mostly polemic. 
Banorort, W. D., ‘J. Phys. Chem.,’ 1912, 16, 395. 
‘ Action of water vapour upon gelatine.’ 
1913. 
Woop, J. T., and Law, D. J., ‘ Coll.,’ 1913, 12, 43. 
“Some notes on the enzymes concerned in the puering or bating process.’ 
Brocuert, ANDRE, ‘ Compt. rend.,’ 1912, 155, 1614. (Abst., ‘ Coll.,’ 1913, 12, 160.) 
‘ Relation entre la conductivité des acides et leur absorption par la peau.’ 
Relation between the conductivity of acids and their absorption by skin. The 
determinations were made in solutions containing 100 grm. of salt per litre, and 
the acid absorbed must therefore have been mainly hydrochloric acid, as shown by 
Procter. 
EnRENBERG, R., ‘ Biochem. Zeitschr.,’ 1913, 53, 356, from Abst., ‘ J.A.L.C.A.,’ 1913, 
8, 442. 
Swelling of gelatine in aqueous solutions. 
Navassart, M., ‘ Koll. Beihefte,’ 1913-14, 5. 
‘Kolloid-chemische Studien tiber Tannin.’ 
A very full study of the physical properties of gallotannin. 
Ibid. ‘ Koll. Zeitschr.,’ 1913, 12, 97. 
‘ Zur optischen Aktivitét des Tannins.’ 
ZsiaMonpy, R., and BACHMANN, W., ‘ Koll. Zeitschr.,’ 1913, 12, 16. 
‘Ueber Gallerten.’ 
Watpotr, G. S., ‘ Koll. Zeitschr.,’ 1913, 12, 241. 
‘ Brechungskoefficiente von Solen u. Gelen der Gelatine.’ 
1914. 
Proctrr, H. R., ‘T.C.S.,’ 1914, 105, 313. Rep., ‘Coll.,’ 1914, 138, 194, and 
‘J.A.L.C.A.,’ 1914, 9, 207. 
‘Equilibrium of dilute hydrochloric acid and gelatine.’ 
Fiscurr, M. H., and Syxzs, Annz, ‘ Koll. Zeitschr.,’ 1914, 14, 215. (Abst., ‘J.C.8.,’ 
1914, 100, II., 542.) . 
‘ Ueber den Einfluss einige Nichtelektrolyte auf die Quellung von Protein.’ 
Saccharose, levulose, dextrose, methyl- and propyl-alcohols, propyleneglycol and 
acetone diminish swelling of gelatine, 
