CONIFERS 31
Specific gravity.
Optical rotation
Refractive index
Distillate from 155° to 158°
„ 158° „ 160°
,. 160° „ 165°
„ 165° „ 175°0-863 to 0-870
-35° „ -40°
1-4680 „ 1-4725
45 to 50 per cent,
about 30 „
„ 165 °TURPENTINE FROM AGATHIS EOBUSTA.
The oleo-resinous exudation from this Australian tree, known as the
" Queensland Kauri," yields an essential oil, which has been examined
FIG. 4. —Tree of Agathis robusta, Queensland.
[P. 373, Pines of Australia.