THE PHILIPPINE 



Journal of Science 



A. Chemical and Geological Sciences 

 and the Industries 



Vol. XII JULY, 1917 No. 4 



THE PHYSIOLOGICAL ACTIVE CONSTITUENTS OF CERTAIN 

 PHILIPPINE MEDICINAL PLANTS: II 1 



By Harvey C Brill and Albert H. Wells 



(From the Laboratory of Organic Chemistry, Bureau of Science, Manila) 



FOUR PLATES 



Lophopetalum toxicum. Toaldalia asiatica. 



Erythrophloeum densiflorum. Lunasia amara. 



Quisqualis indica. Rourea erecta. 



Tylophora brevipes. Hymenodictyon excelsum. 



INTRODUCTION 



An investigation of the physiologically active principles of the 

 medicinal plants occurring in the Philippine Islands was begun 

 by Bacon 2 in 1906. His investigation included Alstonia schol- 

 aris R. Br., Datura fastuosa Linn., Caesalpinia sappan Linn., C. 

 bonducella Flem., Entada scandens Benth., Tinospora crispa 

 Miers., Argemone mexicana Linn., Erythoxylon burmanicum 

 Griff., Aleurites moluccana Willd., A. trisperma Blanco, and 

 Jatropha curcas Linn. 



It is recognized that many of the plants growing in the Archi- 

 pelago that are reputed to be physiologically active have thera- 

 peutic value, but there is reason to believe that certain others 

 possess no medicinal properties. Many of the plants found in the 



1 Receive for publication February, 1917. Botanical material and scien- 

 tific and native names were furnished by Mr. E. D. Merrill and Dr. Leon 

 Ma. Guerrero, of the section of botany, Bureau of Science; the historical 

 data regarding local uses of the species investigated was supplied by Doctor 

 Guerrero. 



2 Bacon, R. F., This Journal (1906), 1, 1007. 



150276 167 



