CONTENTS xiii 



SECTION PAGE 



3. EXTRACTION . 230 



4. CLARIFICATION AND DECOLORIZATION 234 



5. BLEACHING 241 



6. EVAPORATION 248 



7. COOLING AND DRYING 255 



8. USES OF GELATINE AND GLUE 260 



9. THE EVOLUTION OF THE GELATINE AND GLUE INDUSTRY 265 



PART VI. 

 MISCELLANEOUS PROTEINS AND BYE-PRODUCTS. 



1. BYE-PRODUCTS OF THE LEATHER TRADES . . . .268 



2. BYE-PRODUCTS OF THE GELATINE AND GLUE TRADES . 272 



3. FOOD PROTEINS 274 



4. MISCELLANEOUS ANIMAL PROTEINS 279 



INDEX . 283 



