72 
Ps 
dissolves, and fine needles (2) of crystallised ellagic acid are formes 
by evaporating the hot solution. In chloroform the powdery deposit 
dissolves, and on evaporation long crystalline needles of ellagic acid 
and round globules of a resin are left. 
In cold alcohol the A. lanceolata tan-resin gum seems at HES) 
be entirely soluble, but after a short time a whitish deposit resembling 
arabin is deposited, which, when tested, proves to be nothing else but 
ellagic acid, amounting to 8 . of the tan-resin gum, | 
residue of metarabin (9°4 per cent.) settles, with bark and impurities, 
5°3 per cent. . 
Tn finding so much ellagic acid, we are induced to look for— 
1. Ellagitannic acid as the mother substance, and to ogni 
reactions of the tan-resin gum solution with those of myrobalans ‘ 
tannate most allied to that of myrobalans and divi-divi. pres a 
solution of the tan-resin gum, when filtered off from the eae nettlf 4 
of ellagic acid, continues to make fresh deposits of this, unti 2 ding a 
all ellagitannic acid is exhausted, and only the phlobaphene rE iy : 
on is left, so that an old watery solution is stain only Pp 
On addition of HCl to afresh watery solution of A. a : 
tan-resin gum the ellagitannic acid is précipitated first, mie ned 
‘ er on, arate s T Ki 
it yields ellagic acid insoluble in spirits and dissolved by * 
ey yellow colouration.* ther tannin isle 
After elimination of the ellagitannic acid = = reactions, 4% q 
