K. 0. VERBENACE^. 



985 



Prof. D. D. Kanga, m. a., of Elphinstone College, Bombay, 

 who has analysed this plant, reports as follows : — 



The flowers were collected in the months of August and September from 

 places in the neighbourhood of the Science Research Institute, Bangalore, 

 dried in air and distilled with steam. 



The leaves were also locally collected in the month of January 1912, pow- 

 dered and extracted with warm alcohol for the determination of the consti- 

 tuents ; the alcoholic extract was steam-distilled, when an oil came over 

 along with a little free volatile acid. 28*26 grams of the fresh flowers lost 

 22*2 grams, of water on drying at HOC. Hence moisture 78 per cent. 



The yield of the oil from the air-dried flowers was 0*077, while that from 

 the leaves was 0*2 per cent. 



The following table gives the physical properties and some 



chemical constants of the oils : — 





Oil from the 

 dried flowers. 



Oil from the 

 fresh flowers. 



Oil from the 

 leaves. 



Oil from the 



leaves of the 



South American 



plant, according 



to Messrs. 



Schimmeland 



Co's. Report, 



Oct. 1909. 



Colour ... 



Yellow 



Yellow 



Yellow 



Pale-yellow 



Odour 



Powerful, per- 

 sistent and 

 pleasant, re- 

 minding of 

 sage. 



Powerful, per- 

 sistent and 

 pleasant re- 

 minding of 

 sage. 



Powerful, per- 

 sistent and 

 pleasant, re- 

 minding of 

 sage. 



Pleasant, re- 

 minding of 



sage. 



Yield ... 



0-07 % by 

 weight. 





0-2 "jo by weight 



Varying great- 

 ly according to 

 age. One yield 

 was 0-07% and 

 another 0*245% 

 by volume. 



Specific ... 

 gravity. 



D26>915 





d|£ 0-92114 



D f-°0-9132 



Refractive 

 Index 



Optical 

 Rotation. 



r£ 6 ' 5 ° 1-4987. 



1 J Hg— green 

 +23*9° 



4 6 ' 5 ° 15031 



70°, 1-48933 



M r> + 1-96° 



30° 1.4913 

 [a]Jf+ll*« 



Saponifica- 

 tion Value 



10 



... 





... 



Acetyl 

 value 



43-6 









When subjected to fractional distillation under a pressure 

 varying from 45 to 55mm., the following fractions were collected 



124 



