REFRACTIVE INDICES WITH OTHER DATA OF EUCALYPTUS OILS. 47 



Phellandrene oils in which the sesquiterpene is a pro- 

 nounced constituent. Refractive index is above 

 1*48 and in some instances above 1*5. 



No. 



Species. 



Refractive 



index 

 n„ 16° C. 



Specific 

 gravity 



H°c. 



Specific 



refractive 



energy 



n D — 1 



93 E. acmenoides 



angophoroides 



capitellata 



crebra 



Dawsoni 



fastigata 



Fletcheri* 



gomphocephala 



hcemastoma 



macrorrhyncha 



melanophloia 



microtheca ... 



94 



95 



96 



97 



98 



99 



100 



101 



102 



103 



104 



105 



106 



107 



108 



109 



110 



111 



112 



113 



114 



nigra 



ovalifolia ... 

 Planchoniana 

 pilularis 

 robusta 

 siderophloia 

 sideroxylon v.palli 

 stellulata .. 

 viminalis . . 

 virgata 





1-5065 



•9266 



5466 





1-4881 



•9207 



5301 





1-4828 



•9176 



5261 





1-4844 



•8989 



5388 





1-5144 



•9528 



5399 





1-4873 



•8948 



5446 





1-4881 



•8882 



5495 





1-4815 



•8752 



5501 





1-5013 



'9196 



5451 





1-4802 



•9166 



5239 





1-4950 



•8959 



5526, 





1-4895 



•8866 



5521 





1-4871 



•8838 



5511 





1-4921 



•8911 



5522 





1-4878 



•9166 



5322 





1-4961 



•8924 



5559 





1-4801 



•8899 



5395 





1-5000 



•9081 



5506 



ms 



1-4884 



•9167- 



5328 





1-4902 



•8766 



5589 





1-4855 



•9088 



5342 





1-5015 



•9352 



5363 



No. 102 is the only- 

 oil less soluble 

 than with one 

 volume 80 per 

 cent, alcohol; a 

 large number 

 were insoluble 

 in ten volumes 

 80 per cent, 

 alcohol. 



Oils not classified ; containing geraniol and its acetic 

 acid ester, citral, citronellal, etc. 



115 



116 



117 

 118 



E. citriodora ... 



Do. Mr. Ingham, Qld 



E. Macarthuri 



Do. cont. 6473% ester 



Do. cont. 68-8% ester 



E. Staigeriana 



„ aggregata 



1-4651 



•88S7 



•5233 



1-4678 



•8829 



•5298 



1-4793 



•9271 



•5172 



1-4763 



•9252 



•5148 



1-4768 



•9287 



•5134 



1-4871 



•8708 



•5594 



1-5062 



•9701 



•5218 



Soluble in 1 5 vols. 

 70% alco. at 16° C. 

 Soluble in 1*3 vol- 

 umes 70% alcohol 



Insoluble in 6 vol- 

 umes 80% alcohol 

 Insoluble in 10 

 vols. 80% alcohol 



* Denotes the presence of a small amount of aromadendral in the oil. 



