ja your dmsnaatnacr Baas 7 
52 " 
From 20 grams of Myoporum resin I obtained 2°4 grams of pictic | 
over 300° C. the Myoporum resin splits up and yields phenol. 
acid by heating it with 240 grams of HNO,. 
As Mr. Maiden’s resin was not dissolved entirely in alcohol and 
petroleum spirit, the Myoporum resin (collected by myself on the 
Lachlan) must undergo variations from the atmosphere and perhaps 
from bush fires also. 
Callitris calcarata, B. Br. (Frenela Endlicheri, Parlat.), Fl. Austr. 
vi. 238. Cypress Pine. This Queensland tree yields a transparent, 
colourless, fragrant resin, with a vitreous fracture, and a mealy s 
in the form of tears, somewhat resembling the sandarac of commerce 
from Oallitris quadrivaivis. It is very easily powdered, and softens 
in boiling water. It has a specific gravity 0 1:07, and does not melt 
go easily asthe sandarac of commerce. On cooling it hardens to 
brittle mass resembling pumice-stone. 
It is nearly insoluble in chloroform and benzol. Chloroform 
makes the sandarac swell and crumble to a powdery mass 0” the 
bottom of the bottle. (Queensland Dammar goes to the top of the 
resin up in Beta and Gamma resin of Unverdorben. | The identit : 
these reactions. . 
The alcoholic solution of the resin is stained beautifully yellow 
by KOH. Ferric salt gives no reaction. 
Oil of eucalypt dissolves the Queensland gandarac to & yellow 
oleo resin. KOH makes it swell, and dissolves it partly to ® ste 
yellow soap. H,SO, has no effect on it at first, and dissolves 
after some time with decomposition. If heated to 200° C. 4°8 
cent. of a colourless volatile oil is distilled over, floating on water, 
ind has an odour like the oil of Juniperis communis, reminding one * 
0 
ANALYsIs— ; 
—- ee ee . ie 
pha resin, precip. by sugar of lead & sc ree “ 
Beta resin, precip. in KOH by CaCl “ae 
Gamma resin, left in, KOH falling wut ey HCl oc oe oe 35°0 
99°7 
_ Sandarac was formerly given internally, and entered into the a q 
of various ointments and plasters. At present it 18 a 
ad . . 
with a solution of gelatine. 498. 
Agathis robusta, Benth. and Hook. Gen. Pl. Syn. Ql Fi. oe. 
