﻿34 



CLOVER. 



boil as constantly as the pure terpene oils which were isolated, but they 

 passed over completely within a range of from 2°. 5 to 3°. 5. 



Designation of oil. 



Sp. gr., 

 (?) 



„ 30 

 a D 



n' i0 

 n D 



1. 0315 



o 

 —1.2 



1. 5159 



1. 0247 



±0.0 



1.5143 



.9969 



—0.5 



1. 5068 



.9887 



—2.5 



1.5055 



.9689 



—2.5 



1. 5005 



.9621 



n 



1. 4995 



.9559 



—2.4 



1. 4985 



.9559 



+2 



1. 4950 



.9522 



—2.7 



1. 4973 



.9482 



—2 



1. 4957 



.9461 



—0.8 



1.4941 



.8677 



+71.6 



1. 4757 



Approximate 

 solubility in 

 100 parts 55 



per cent 

 alcohol (by 



volume). 



IV.C. purified 



I,C, purified 



XIII.B, purified... 



III.B. purified 



VII.C, purified ___ 



VI, B, purified 



VIII, B, purified __ 

 XVIII, B, purified 



II, C, purified 



XIV.B, purified _. 

 XVI.B, purified _. 

 XII.B, purified 



16 



7.5 



1 Not determined. 



In this table every measurement which has been made is recorded. In 

 two or three cases, as already stated, it was found impossible to obtain a 

 constant-boiling product from the crude distillate and in other instances 

 no high-boiling distillate was taken. 



The oils are arranged in the order of their specific gravities and it will 

 at once be seen that the indices of refraction arrange themselves in 

 precisely the same way, with the exception of XVIII,B, purified, which 

 has an index about 0.0035 lower than it should have. This same oil 

 is also exceptional in that it is slightly dextro-rotator} r , while all the 

 others are slightly laevo-rotatory. All the oils are practically optically in- 

 active excepting XII,B, purified, which stands apart in all respects from 

 the others. 



Analyses of XII,B, purified, are as follows : 



(1) 0.1455 gram substance gave 0.4309 gram C0 2 and 0.1503 gram H 2 0. 



(2) 0.1490 gram substance gave 0.4405 gram C0 2 and 0.1534 gram H 2 0. 



Required for C 15 H„ 6 Found 



(1) (2) 



Per cent. Per cent. Per cent. 



C=81.08 80.77 80.63 



H=11.71 11.48 11.44 



The analyses are in tolerably good agreement with the formula assigned. 

 The substance, which had remained as an oil for three months after 

 purification, become solid when the inside of the bottle was scratched with 

 a glass pipette. It dissolved in all the organic solvents in any proportion 

 and when an attempt was made to recrystallize it from dilute alcohol in 



