Contents. 



Page 



Introductory remarks 5 



Commercial notes and scientific information on essential oils 11 



New essential oils 10 1 



American Pharmacopoeia 10 1 



Danish Pharmacopoeia 102 



Commercial notes and scientific information on chemical preparations and drugs 104 



Notes on recent research work concerning terpenes and terpene derivatives 1 1 1 



List of abbreviations, 

 d = specific gravity. 

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



20° 



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



4 

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



D20° r 



[a] D = specific rotation. 



n = index of refraction at 20 . 



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. 



^ Y 



t\$k. 



tj$> 



