x CONTENTS 



PART II. 



THE GENERAL CHEMICAL CHARACTERS OF 

 THE PROTEINS. 



SECTION PAGE 



XII. THE QUALITATIVE REACTIONS OF THE PROTEINS . . 30 



XIII. THE CHEMICAL COMPOSITION OF PROTEINS. THE NITROGEN 



CONTENT AND DISTRIBUTION 32 



XIV. THE SULPHUR, PHOSPHORUS AND HALOGEN CONTENT OF 



PROTEINS ......... 36 



XV. THE TYROSINE FACTOR OF PROTEINS . . . -38 



XVI. SALT FORMATION BY PROTEINS. COMBINATION WITH ACIDS 



AND BASES ........ 39 



XVII. THE PRECIPITATION OF PROTEINS BY SALTS OF THE HEAVY 



METALS ......... 56 



XVIII. THE OXIDATION OF THE PROTEINS 58 



XIX. THE ACTION OF HALOGENS ON PROTEINS . . .61 



XX. THE ACTION OF NITROUS ACID ON PROTEINS . . .67 



XXI. ACTION OF FORMALDEHYDE ON PROTEINS ... 69 



PART III. 



BIOLOGICAL METHODS FOR THE IDENTIFICATION 

 AND DIFFERENTIATION OF PROTEINS. 



XXII. THE PRECIPITIN REACTION 71 



BIBLIOGRAPHY 78 



INDEX 85 



