RUBIACE®. 903 
id, the purple colour was developed, and boiled with the 
, the bitterness of the solution was reduced, a brown 
composition product separated, and the filtrate readily 
acrid, and the glucoside was not obtained in crystals. The 
the plant contained a yellow colouring matter related to the 
_quercitrin group, and a colouring matter of the nature of an — 
organic acid was present in the alcoholic extracts, precipitated 
by acids, and redissolving with the formation of an orange 
colour in alkalies. 
A proximate analysis was made of the white calycine leaves, 
the fruits, the green leaves, and the mixed stem and root barks. 
On comparing these results, there is seen to be a correspon- 
dence on the one hand between the composition of the calycine 
aves and fruits, and on the other hand between that of the ~ 
green leaves and bark,—resnlts which might naturally be 
 Calycine Fruit. Leaves. Bark. 
leaves 
Ether extract ajccuccuury ee Oe ou. fot 
Alcohohis , soccer BOt eto Uk are 
Aqueois ~ %,..... hectare es 1 1SS 5 FS 
Crude fibre 32°4 33:2 383 39:3 
Albumen, &c. by difference15"1 85 164 70 
Ash ~ (ou. 30 , ALS ie 
1000 1000 1000 1000 
The bark contained the largest quantity of ether-soluble 
in, which was yellow, opaque, tasteless and very tenacious, 
nthe leaves the resin was associated with a fat, and in the 
The fruits and calycine leaves : : 
