lation if water is added; the resin is eliminated, taken up by 
tloroform and dissolved by KOH. The ellagic acid is dissolved by 
chloroform or hot alcohol; the metarabin by boiling KOH. | 
Avatysis (5th April, 1895)— 
one ae at ic ie 18°0 
agitannic acid ... ris } : 
Tannin, yielding corymbosaredf  ‘* “* aioe 
: Ellagic acid ... AR oer Pte Bee 1 
2 arabin _... oe ae Sey 
Phlobaphene soluble in alcohol ... sae ae ae 
‘1 ae ate as ae =. te i 
Tannin embodied in the resin... ie aT 
Impurities... cas ea a sae Sa 
99°7 
This ectates maculata, Hook., Fl. Aust. iii. 258. Spotted Gum. 
brown treacle-like tan-resin gum, which hardens into large masses. 
When hese are disturbed they give off an aroma like benzoin. 
During rain the gum softens and whitens ; when dry, the colour again 
‘eomes brown. ‘The dry gum is very porous and brittle. 
Th cold water a small amount of the gum is dissolved, with a 
ra ammonia. KOM gives a yellow colouration on an opal 
«fale, turning blood-red inside, greenish outside. Cupric acetate, 
wn i 
ie te 
Tecipitate, turning purple-brown. Sulphide sodium gives 
uration. Lead nitrate, yellow precipitate. Uranium 
-brown mixture. Ammonium molybdate in nitric acid, 
°W colouration. Antimon. tartar. gives a precipitate only on 
ty distillation yields pyrogallol. 
Hfan old watery solution be boiled with dilute HCl, it deposits a 
tate, which on addition of alcohol is only partly dissolved. ey 
The orget’ (Phlobaphene) is stained beautifully pink by KO! th 
bnght +) nsoluble part consists of ellagic acid, and dissolves wi 
Yellow colouration in KOH. 
Of them getting reconverted in a erystal after cooling. 
ein alcohol and slightly alkaline water, have the pungent 
5) 70l¢ acid, and the irritating smell of this substance when 
ee ealt produces in the solution a reddish-yellow precipt- 
& them to consist of benzoic acid. —_- = ee 
