x CONTENTS 



PAGE 



Classification 149 



Characteristics and properties of normal cellulose . . . 150- 



Solubility 150 



Action of chemicals on cellulose 151 



Characteristics and properties of compound celluloses . . . 154 



Constitution 158 



Industrial uses of cellulose and cellulose products . . . 160 



Commercially valuable derivatives of cellulose .... 161 



Microchemical reactions . . 163. 



SECTION IV. GLUCOSIDES 167 



Constitution . 168 



Identification 169 



Physiological significance 170 



Cyanogenetic glucosides 173 



Isolation 175 



Chemistry 175 



Reactions 176 



Amygdalin 178 



Dhurrin 180 



Phaseolunatin . 180 



Lotusin 181 



Saponins 181 



General properties and uses 182 



Solubility 182 



Physiological action 183 



Chemistry ............ 183 



Reactions 185 



Other glucosides 185 



Sinigrin . . . . . . . . . . . 185 



Preparation 186 



Coniferin 186 



Salicin .187 



Preparation 188 



Indicane 189 



Identification . . . ' . . . . . 189 



SECTION V. TANNINS .192 



Occurrence 193 



Microchemical reactions 196 



Chemistry 199 



Pyrocatechol, catechol, or pyrocatechin 200 



Reactions : 201 



Resorcinol 201 



Reactions .' 201 



Hydroquinone ........... 201 



Reactions 201 



Protocatechuic acid 202 



Reactions 202 



Pyrogallol or pyrogallic acid 203 



Reactions 203 



Phloroglucinol ........... 203 



Reactions 204 



