Contents. 



Page 



Introductory remarks 5 



Commercial notes and scientific information on essential oils 10 



New essential oils 105 



Dutch Pharmacopoeia 107 



British Pharmacopoeia 107 



Commercial notes and scientific information on chemical preparations and drugs 109 



Notes on recent research work concerning terpenes and terpene derivatives 113 



List of abbreviations. 

 d = specific gravity. 

 d^ 0O = specific gravity at 20 , compared with water at 15 . 



20 



d —q = specific gravity at 20 , compared with water at 4 . 



4 

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



[a] D = specific rotation. 



n^ „ = index of refraction at 20 . 



D20° 



Sol. p. = solidifying point. 



M. p. = melting point. 



B. p. = boiling point. 



n == normal. 



Acid no. = acid number; ester no. — ester number; sap. no. = saponification 



number. 

 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. 





