77 
would be observed in the bright-yellow solution. The part soluble in 
- tleohol is eliminated on addition of water. The resin is taken out o 
Y hin by chloroform, and deposited as globules on ine watchglass after 
- Maporation. No- crystals could be observed. The resin dissolves with 
yellow colouration in KOH. The water (aiited with alcohol) 
at of which the resin was taken by chloroform is remarkable for the 
ep crimson colouration which it gets on addition of ferricyanide 
Sina in ammonia. This colouration is due to the phlobaphene. 
By boiling a wat ery solution of Z. mierocorys gum with dilute 
HCl only phlobaphene is obtained, and no trace of ellagic acid. 
wit pata of the residue left undissolved in water yields 
avis (15th January, 1895)— 
Wate wl e be a a 
Tanni ies abe él ee 
eats and metarabin as oe oh We ege 2s. | 
Gaepbes Mees wie 
Ellagi meres a 
Pan re in ei Scams ee ee eee ee 
By Eucalyptus tessellaris, F. y. M., Fl. Austr. iii. Moreton 
y Ash, On the u upper part of the tree the bark is ee on 
_ the ste m it remains in quadrangular pieces; hence the name. The 
natin differs from all other Eucalypt exudations on account of 
the low melting point (30° C.) of the tan resin; it runs from the tree 
“rene of dark-brown treacle without any tnt of redness, passing 
ack, Exposed to air it becomes hardene 
dry tan-resin gum is reddish- leche “ight and shining. 
tannin, which is 
tat 52:3 percent. It shows exactly the same reactions as the 
Hh 
Sa Stains the a alcohol solution brown, as the ve 
‘id ved in trong alkalies with brown coloura met 
phlot to the alcoholic se latiok, a turbidity te Side takes the 
ne and the tannin out of the turbid liquid; the resin is 
' The ‘phlobaphene is dissolved by KOH with pink, the resin 
. y 
TS inte y ellow colouration. The resin bas nothing to do with 
aed 
Arabia a and metarabin 
Phiobaphene i and tannin embodied i in the resin 
