CHEMISTRY OF AUSTRALIAN MYRTACEOUS KINOS. 39 
Tue Seconp Bopy IsoLareD From THE Kino or Eucalyptus 
hemiphloia, F.v.M. 
As already stated, there is a resinous looki h extracted 
with eudesmin by ether from the kino of £Z. hemniyhioibe As this 
is soluble in boiling water (with difficulty, as it melts into greasy 
looking masses), but separates again on cooling, we must consider 
that this substance also plays a part in the turbidity of this kino 
as well as eudesmin. This body, when allowed to precipitate from 
boiling water is removed from the aqueous solution by ag*iating 
with ether, the liquid becoming quite clear, demonstrating tnat 
the whole of the bodies causing this turbidity have been removed. 
As the ether slowly evaporates, crystals form at the junction of 
the ether and water ; these fall through the liquid to the bottom 
of the vessel, either by themselves or when the vessel is gently 
agitated. We have only just succeeded in crystallizing this sub- 
Stance, and a subsequent communication will be made to the 
Society when its chemistry has been worked out. 
As seen under the microscope the crystals are plates. In the 
early state of crystallization the rhombus is the principal form, 
but as they become larger they form six sided plates. These 
polarize most beautifully in bright colours. 
One determination was made of the melting point, it was found 
that the crystals melted on the surface of mercury at 162° C. 
Its colour reactions are as follows, and from the results at 
present obtained it appears that the characteristic colour reaction 
Previously given to ellagic acid, of forming a crimson colour with 
fuming nitric acid, will have to be modified, as the body of which 
we now write, gives this crimson reaction most beautifully clear 
and pure, not only with fuming nitric acid, but with nitric acid, 
and also when the nitric acid is slightly diluted. 
KHO gives a bright yellow colour, which colour is permanent 
in the air even until it is dried up. Sulphuric acid dissolves it 
yellow, becoming brown on standing. Fe,Cl, solution has but 
little colour reaction with these crystals. 
