﻿THE TERPENE OILS OF MANILA ELEMI. 35 



the cold, it separated as an oil. The body is almost colorless and possesses 

 a mild, pleasant odor. It is moderately viscous. At ordinary pressure 

 it distills at 270° to 280° with the formation of water. 



A half dozen or more oxygen-containing substances, mostly crystalline, 

 have been isolated from the high-boiling portions of different essential 

 oils. They have, in general, the same properties as this body and to 

 most of them the same chemical formula has been assigned. They are 

 sometimes known as sesquiterpene alcohols. To judge from the data 

 given in the above table, the body is radically different from any of the 

 other constant-boiling product isolated from different samples and as will 

 be seen later, it is not a constituent of any of these oils. It is evidently 

 practically a pure substance and its occurence in this single sample is 

 most remarkable. 



All of the other oils given in the table are closely related and are 

 grouped together. In addition to the regular variations already noted, 

 there is a constant increase in viscosity from the first oil to the last. 

 The first, IV,C, purified, is very mobile, while the last, XVI,B, purified, 

 is very viscous. All of these regularities at once suggest that we have 

 in these different products a mixture of two substances in varying 

 proportions and this is undoubtedly the case. The following analyses 

 tend to confirm this view. The numbers obtained for XVI,B, purified, 

 are: 



(1) 0.1911 gram substance gave 0.5533 gram CO, and 0.1934 gram H,0. 



(2) 0.1630 gram substance gave 0.4721 gram CO., and 0.1637 gram H,0. 



Found 



(1) (2) 



Per cent. Per cent. 



C=78.96 79.00 



H=11.24 11.16 



The analysis of XIV,B, purified, gave the following results': 



(1) 0.1482 gram substance gave 0.4286 gram CO, and 0.1460 gram H 2 0. 



(2) 0.1580 gram substance gave 0.4547 gram CO,, and 0.1589 gram H,0. 



(3) 0.2116 gram substance gave 0.6132 gram CO ; and 0.2137 gram BLO. 



Found 



(1) (2) (3) 



Per cent. Per cent. Per cent. 



C=78.87 78.49 79.03 



H=10.95 11.17 11.22 



The figures obtained for III,B, purified are as follows : 



(1) 0.1683 gram substance gave 0.4629 gram CO. and 0.1533 gram H,0. 



(2) 0.1714 gram substance gave 0.4709 gram C0 2 and 0.1500 gram ELO. 



Found 



(1) 



(2) 



Per cent. 



Per cent. 



C=75.01 



74.93 



H=10.12 



9.72 



