66 CG. A. MAO MUNN. 
this violet colouring matter is soluble in water with a lilac 
tint, but the solution shows no absorption bands. In thin 
layers it shows some shading at the blue end of green. Sulphide 
of ammonium almost discharged the colour, leaving only a faint 
red with a slightly violet tint. Hydrochloric acid did not 
remove the violet colour. Ammonia produced slight precipita- 
tion and slightly diminished the colour; after filtering the fluid 
remained violet. When the filtrate was treated with caustic 
potash hardly any violet was perceptible. On evaporation the 
aqueous solution lost its colour, the residue was faintly red and 
insoluble in absolute alcohol, it became slightly greenish with 
nitric acid, slightly green with sulphuric acid, and slightly 
yellow or greenish yellow with iodine in iodide of potassium. 
This, so far as I can judge from Krukenberg’s imperfect 
description of his lipochromoids, would appear to be a lipo- 
chromoid or related to one. 
Glycerine failed to extract any colour from the integument, 
and it yielded nothing to ether. 
The integument yielded no colouring matter to alcohol and 
sulphuric acid, hence no hematoporphyrin was present. The 
alcohol solution of the integument was a deep yellow colour. 
A deep layer transmitted red and a little green, and in a 
thicker layer one band at the blue end of green became detached 
from about 4507 to (474, On evaporation, a residue, partly 
bright red, and partly dull red, was left. This was only partially 
soluble in ether, and the portion left behind became only a dull 
greenish with nitric acid, and the same with sulphuric acid. 
The ether solution was yellow, and in a deep layer transmitted 
red and some green, the violet end being strongly absorbed. 
In a thicker layer a band at the blue end of green was seen 
from about 4.503 to’ 468. The ether left on evaporation a 
red residue, which was not altogether soluble in chloroform, as 
some red pigment yet remained untouched. The chloroform 
solution was orange, and in a deep layer transmitted the red 
and some green, while in a thicker layer it showed one band 
from about A512 to (465. The residue from this solution 
was orange and red; it became a fine but transient blue 
