Contents. 



Page 



Introduction 5 



Commercial and scientific notes on essential oils 17 



New essential oils • 123 



Pharmacopoeias 124 



Chemical Preparations and Drugs 134 



Notes on recent research work: — 



General 144 



Bibliography 148 



Analytical \ \ 149 



Physical 154 



Pharmaco-physiological 157 



Phyto-physiological 159 



Chemical 164 



Hydrocarbons 167 



Alcohols 172 



Aldehydes 178 



Ketones. . 181 



Phenols and Phenol Esters 187 



Acids 188 



Nitrogenous Bodies 191 



List of abbreviations, 

 d 5= specific gravity. 



d 2 oo = specific gravity at 20°, compared with water at 15°. 

 d^ = specific gravity at 20°, compared with water at 4°. 

 a D20 o = optical rotation at 20°, in a 100 mm. tube. 

 Wd == specific rotation. 

 n D20 o = index of refraction at 20°. 

 Sol. p. = solidifying point. 

 M. p. = melting point. 

 B. p. = boiling point, 

 n = normal. 



Acid v. = acid value; ester v. = ester value; sap. v. = saponification value, 

 g. = gram; cc. cubic centimeter; mm. = millimeter. 



Temperatures are uniformly given in degrees Centigrade. 

 The strength of alcohol, if not otherwise indicated, is given in per 

 cent, by volume. 



<<^s*- ^ 



