INDEX 



291 



Osmotic pressure, influence of pH 

 on, 68-76, 172-179, 234, 

 237 

 of valency on, 65-76, 172- 



179, 256, 257 



of mixtures of liquid and 

 powdered gelatin, 236-238 

 theory of, 168-172 

 Ostwald viscometer, 82, 195, 200 

 Ostwald, Wo., 76, 77 

 Oxy hemoglobin, 9 



Paal, 275 



Pauli, W., 4. 13, 17, 18, 19, 27, 32, 

 69,74,88,89,114-116,118, 

 130, 197 



Pekelharing, C. A., 36 

 Pepsin digestion, 36 

 Perrin, J., 7, 151, 165 

 Picton, 11, 16, 163, 261 

 Platinum, 3 

 Potential differences, between solid 



gel and solution, 152-154 

 of cells and tissues, 166-168 

 see Membrane potentials. 

 Powis, F., 11 



Precipitation, 10-13, 113, 243-274 

 critical point of alcohol con- 

 centration in, 253-255 

 effect of valency in, 258-261. 



274 



of casein, 266-274 

 of egg albumin, 244, 252, 265 

 of gelatin, in alcoholic solutions, 

 251-255, 258-261, 263, 264 

 in aqueous solutions, 244, 245 

 Preparation of proteins, 27-36 

 Procter, H. R., 3, 23, 24, 25, 62, 63, 

 124, 130, 143, 169, 170, 189, 

 190-192, 269, 270, 272 

 Proteins, isoelectric point of, 9, 37- 



39 



preparation of pure, 27-36 

 stability of solutions of, 243-274 

 titration experiments with, 40- 

 64 



Quincke, 266 



Q 



R 



Reyher, R., 17 



Ringer, W. E., 36 



Robertson, T. B., 4, 25, 32, 230, 267 



Sackur, O., 17, 32, 89 



Schulze, 11, 16, 163, 261 



Serum albumin, 9 



Smith, C. R., 36 



Smoluchowski, M., 196, 204, 205. 



212 

 Solubility, of casein, 71, 86, 193, 



222, 251, 266-274 

 of gelatin, effect of salts on, 



245-251 

 S0rensen, S. P. L., 4, 9, 28, 32, 42, 



43, 45, 147, 244, 278 

 Stability, of protein solutions, 243- 



274 



of suspensions, 150-152 

 Stoichiometrical behavior, of albu- 

 min, 40, 44-49, 60, 61 

 of casein, 54, 55 

 of gelatin, 40, 49-52, 55-59, 



62 



Surface tension, 11 

 Suspensions of gelatin, effect of salts 



on charge of, 157-166 

 electrical charge of, 152-154 

 influence of acid and alkali 



on, 155-157 

 influence of pH on charge of, 



155 



stability of, 150-152 

 viscosity of, 206-212 

 Suspensoids, 243 

 Swelling, 76-82, 189-194 



curves for, 38, 79, 80, 81, 222 

 effect of salts, 105-107, 228, 229 

 curves for, 105, 107 



