x CONTENTS 



I 



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 



