Contents, 



Page 



Introduction 5 



Commercial notes and scientific information on essential oils 20 



New essential oils Ill 



Chemical Preparations and Drugs 112 



Notes on recent research work: — 



General 122 



Bibliography 124 



Analytical 124 



Physical 129 



Pharmaco-physiological 131 



Phyto-physiological 132 



Chemical 133 



Hydrocarbons 134 



Alcohols 139 



Aldehydes 139 



Ketones 141 



Phenols and Phenol-ethers 144 



Acids and Lactones 145 



Oxides 150 



Nitrogenous Bodies 151 



List of abbreviations, 

 d = specific gravity. 



d 2 oo = specific gravity at 20° (in references from our laboratories uniformly compared 



with water at 15°). 

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

 a D2oo = optical rotation at 20°, in a 100 mm. tube. 

 Wd = specific rotation. 

 "dmo = 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. 



