U. S. DEPARTMENT OF AGRICULTURE. 



BUREAU OF PLANT INDUSTRY— BULLETIN NO. 195. 



B. T. GALLOWAY, Chief of Bureau. 



THE PRODUCTION OF VOLATILE OILS 



AND PERFUMERY PLANTS IN 



THE UNITED STATES. 



BY 



FRANK RABAK, 



Chemical Biologist, Drug-Plant, Poisonous-Plant, Physio- 

 logical, AND Fermentation Investigations. 



Issi'ED December 9, 1910. 



LIBRARY 

 NEW YORK 

 BOTANICAL 



OARDiiN. 



WASHINGTON: 



government printing office. 



1910. 



