ea LEGUMINOS£. 
glands become broken and a bright yellow emulsion is form 
if this emulsion is allowed to stand, the resinous matter 
subside and.leave a yellow sweetish solution, The a DO 
tion of Wars is dissolved by ether and warm alcohol, the | 
sulting solution being of a bright orange-red colour; 
treated with caustic alkalies the solution is intensely roe 
sinks in oil of turpentine, imparting a slight colour to it after 
time. When rubbed up in a mortar with water and the mi: 
ture submitted to distillation,an odour between that of caraw: 
and lemon was observed in the distillate, and a greasy film | 
the receiver indicated traces of volatile oil as its source. Heate 
in a crucible, it at first blackened, giving off aromatic vapo 
then intumesced and evolved inflammable gases which bu 
with a smoky flame; when the charred mass was destroyed | 
prolonged ignition, a residue was left of a gray-coloured 
consisting mainly of finely divided sand. 
Chemical composition.—The resinous colouring matter whit 
constitutes the chief part of Wars has a brittle consis 
when observed in thin strata. It is soluble in ether, alcoho 
benzol, chloroform, carbon disulphide, acetic acid, and in si 
tions of potash, soda, ammonia, and their carbonates. It forn 
soluble compounds with lime and magnesia. It is precipitate 
from its solutions in the alkalies by acids in an apparent 
unaltered condition. Sulphuric acid dissolves it in the col 
Heated with nitric acid it rapidly oxidizes, yielding yelloy 
coloured products and aresin soluble in alcohol. A solution 
spirit is partially precipitated by acetate of lead. i 
alcohol appears to separate it into two resins; a soluble one | 
a yellow colour, and an insoluble one of a deep red. Hea re 
with potash or soda an odour of citron isevolved. An ethe 
solution of the resin allowed to evaporate spontaneor 
deposits a mass of crystals. The crystalsare ofa lighter co 
than that of the surrounding red resin; examined micro: 
cally, they appear as crops of acicular prisms radiating fr ; 
common centre. Ether and other liquids were 
view to remove the crystals from the resin’ oF. 
2 bat all the volatile solvents tried | resulted in 
