206 A RESEARCH ON THE EUCALYPTS OF TASMANIA 



5.— TABULATED EESULTS WITH THE CRUDE 

 OILS, TOGETHER WITH THEIR PRINCIPAL 

 CONSTITUENTS. 



The full analysis of any particular oil will be found 

 described under that species. Where more than one result 

 is given, the figures represent the highest and lowest 

 obtained by us. Constituents, other than those enumer- 

 ated, may be present in small amount in many of the oils, 

 but only those found have been enumerated. Volatile 

 aldehydes are always present in the crude oils in small 

 amount, but they are not identical in all the species. The 

 saponification number includes that of the free acid as 

 well as the ester. The alcohol used in determining the 

 solubilities was standardised for percentage of absolute 

 alcohol by weight. The refractive indices were taken with 

 a Zeiss Abbe refractometer, and the temperatures given 

 are those of the circulating water. The yield of oil we 

 obtained with the several species is given in a separate 

 table; these results were from green material collected as 

 would be done for commercial oil distillation. E. globu- 

 lus is not included in this list, as the oil is so well known; 

 for that reason we did not obtain leaves from Tasmania 

 for distillation. 



