202 



A. R. PENFOLD. 



Experimental. — The 190 lbs. of leaves and brandies were 

 collected at different periods and on distillation yielded 

 crude oils which on examination gave the chemical and 

 physical characters shewn in the following table : — 



Date. 



Percent- 

 age 

 yield. 



Specific 

 gravity 



at !5°C 



Optical 

 Rota- 

 tion 



Refract. 



Index 

 at 20° C. 



Ester No. 



Hot 

 I3 hours 



sap. 



Ester No. 



Coll 

 2 hours 

 contact. 



Ester Nos.- 



after 



Acetylation. 



Solubility in 

 80% alcoho 

 by weight. 





Hot. 



91-93 



57-00 

 87-03 



Cold. 



5/8/1917 

 15/5,20 

 3/10/20 



0-88°/o 

 0-4% 

 0-9% 



0-9246 

 09163 



9280 



- 16-32° 



- 33 02° 



- 19-02° 



1-4960 

 14989 

 T4990 



7-2 

 55 

 72 



7'2 

 56 

 7 2 



3395 

 21-55 

 22-60 



1 vol in 10 

 insol in 10 

 1 vol. in 10 



The saponification No. after acetylation of last distillation 

 is a little lower than the first on account of portion of the 

 eudesmol having been collected separately from the oil by 

 increasing the steam pressure towards the end of distilla- 

 tion. The amount of oil obtained was equal to 0'81% and 

 the crude eudesmol separately obtained = 0'09%. 



The crude oils gave the following fractions on distillation: 



Sample 5/8/17. 



The acids forming the esters were separated by cold 

 saponification and were found to consist principally of 

 butyric acid with a small amount of acetic acid. On then 

 subjecting to distillation 50 c.c. of the ester-free oil the 

 following fractions were obtained : — 



Initial boiling point 157° O. at 762 mm. 



Boiling Point. 





Sp. Gravity 



Optical 



Refractive Index; 



C, 





at 15° C. 



Rotation 



at 20° C. 



157-161 



4 



... 



... 



... 



16H-165 



14 



0*8703 



- 13*00° 



1-4740 



165-180 



10 



. .. 



... 



... 



180-240 



10 





... 



... 



240 - 269 



23 



0*9293 



- 24*33° 



1*5010 



270-280 



27 



0-9494 



-17*20° 



1*5095 



280-285 



9 



0*9606 



nil 



1-5103 

 (solidified) 



Samples 15/5/20 and 3/10/20 were distilled under reduced 

 pressure at 10 mm. 100 c.c. of each taken. 



