1 1 



Materia] of this -peri,- i, M distillation was obtained from the follow 

 localities in N.S.W. Lismo 13rd July, [900; rumbulgum, [5th September, 

 [900; Bulahdelah, 3rd September, 1 ,d Barber's Creek, 1:7th March, 1 



l'lic oils from all this material were practicallj identical in all their charad 

 .1- 1 .in In' seen from the follow iner 1 able : 



ies, 1 ocality, and Date of c". .11*-. li n 



Percoi 

 Yiel 



Eucalyptus saligna var. pallidivalvis — 



Lismore, 23rd July, tgoo 



Tumbulgum, 15th Septembei C900 0-238 

 Bulahdelah, ;rd Septembei [900 .. 0-162 

 Barber's Creek, 17th March, [899 .. 0-121 



1 



0-892: 



ition 



tlnll 



N u m 



• 14-5 



timi 





[2-6 



ti-9 



ii-t 



The tractions, from those oils redistilled, were identical in each case, so that 

 the results show a remarkable constancy with the several samples. The oil from 

 Bulahdelah, for instance, when compared with that obtained nearly two months 

 earlier from Lismore, is worthy of note. The amount of oil distilling below i6y < ., 

 the rotations and specific gravities ol the several fractions, the saponification 

 number for the ester-,, together with the solubility in alcohol, all ,140 to -how this 

 close agreement. The nitrosochloride was prepared with the pinene, and this 

 melted at 103-104° C. Although the oil of this form of E. saligna contains so 

 much pinene, yet it scarcely falls into the group insoluble in to volumes ol 80 

 per cent, alcohol; this peculiarity must, therefore, be due to the esters, and to 

 the tree alcohol, because the amount of cineol present is too small to influence 

 the solubility. The crude oils of all our samples formed clear solutions with 

 either 7, 8, or 9 volumes 80 per cent, alcohol. 



To determine the approximate amount of tree alcohol in the oil of this 

 species a portion of the Lismore oil was acetylated in the usual way, carefully 

 herd from acid and saponified. The saponification number had then increased 

 to 56-04, so that the amount of alcohols present is represented 1>\ tin saponifi- 

 cation number 27-14. Tin , terised oil had a distind odour of amyl-acetate. 

 Although amyl-alcohol was present m combination as well as in the free condition, 

 yet, it may be that a portion was also in combination with the valeri< acid as an 

 ester. If this is so, then the amyl-alcohol previously determined in the oil of 

 E. globulus might have been derived from a similar est 



The mixed oils oi the above tabulated samples were kept in the dark, and 

 in Octoln-r, r.919, or nineteen years afterwards, the -ample w. in analysed. 



But little alteration had taken place during all thai tune, thus again illustrating 

 the greal -tahilin oi the pinene Eucalyptus oils. The specific gravity of the 

 crude oil at [5 I . was 0-8950. On rectification [6 pei cent, distilled below [60 . 

 76 per cent, below r.80 . and 82 pei cent, below [90 



The portion distilling be'.ow [90 < . had specific gravit5 a1 [5 = 0-8749; 

 rotation a 4- 30-8 . and refractive index a1 jo [-4652. 



