CONTENTS xiii 



PAGE 



glycin- ester, 130; chlorinated amiiio - acid chlorides, leucyl-glyciu- 

 anhydride, splitting of diacipiperazin-rings, 131. 

 Enumeration of peptids built up by E. Fischer's school, 132-138. 



CHAPTEE IV 



THE CONSTITUTION OP ALBUMINS . . . . .139 



Linking of amino-acids : views of Schiitzenberger, Nasse, and Hofmeister, 

 139. 



Biuret-reaction, 141-144. Behaviour towards trypsin, 144. Other modes of 

 union, 146. Hemi- and anti-groups, 148-154. 



Carbohydrate-radicals, 154-168 : constitution of glucosamin, 158. Physio- 

 logical considerations, 164-168. 



Sulphur-radicals, 168-172. 



CHAPTEE V 



ALBUMOSES AND PEPTONES . .. . . . .173 



General account : albumoses, 173 ; peptones, 176. 



Albumoses and peptones obtained by peptic digestion, 178-193. Albumoses: 

 Hofmeister's method for isolating them, 179 ; table of Pick's albumoses 

 and peptones, 180 ; prot-albumose, hetero-albumose, 181 ; ease of 

 peptic digestion, 183 ; properties of albumoses : prot- and hetero- 

 albumose, 183 ; method of preparing pure albumoses, 184. Peptones, 

 187 ; peptids, 189 ; plasteins, anti-albumids, dys-albumose, 191. 



Peptones formed by tryptic digestion, 193-196. Albumoses and peptones 

 produced by action of acids, 199-201. Kyrins, 200. Albumoses pro- 

 duced by the action of alkalies, 201. Compounds formed by moist 

 heat, 202. Carnic acid, 203. 



^hysiology of albumoses and peptones, 204-207. 



CHAPTEE VI 



THE SALTS OF ALBUMINS . . . . . .208 



General theoretical considerations, such as the amphoteric principle and ring- 

 formation, 208-214 ; the salts of glycocoll, 214. Siegfried's C0 2 -com- 

 pounds of amino-acids, 215. Alterations in the acidity and basicity of 

 amino-acids, 216-218. Pluri-acid and pluri-basic nature of albumins, 



218. Pseudo-acid-pseudo-basic nature of albumins and amino-acids, 



219. Hydrolysis of albumins, 220-222. Contamination of albumins 

 by impurities, 222. Salts of edestin and casein, 222. 



Action of formaldehyde, 223. 



Natural reactions of albumins, nucleo-albumins, histones, 223 ; albumoses 



and Siegfried's peptones, 224. 

 The individual salts, 224 ; especially with aniline-dyes, 225-229. 



CHAPTEE VII 



HALOGEN- ALBUMINS AND ALLIED MATTER . . . .230 



lodo-albumins, 230-235. Other halogen-albumins, 235. Nitro-substitution 

 products, 236. Oxyproteic and oxyprot-sulphonic acids, 237-242. 



