[ 92 ] 
mained in the filter was digefled a fecond time, with four 
ounces of frefh fpirit of wine, and the liquor filtered ; 
this folution was much weaker than the firft. The un- 
diflblved part remaining in the filter after this fecond 
folution was digefted, a third time, with four ounces of 
frefli fpirit ; but the folution was now quite weak, and 
of a very pale yellow colour. The 7'efiduum being now 
deprived of its colouring portion, was flowly dried, when 
it appeared of a very pale yellow colour, felt as foft as 
ftarch between the fingers, and weighed forty two grains; 
fo that two thirds nearly of this colouring fubftance are 
foluble in fpirit of wine; the undiflblved part is not fo- 
luble in water, acids or alkalies. Put on a red hot iron, 
it fmoaks and catches fire without melting, leaving a ca- 
^ut mortuum^ andgives afmell fimilar to that arifing from 
common vegetable matter. The firfi: folution in fpirit 
of wine, after ftanding twenty-four hours, de^^ofits fome 
of its colour in the form of minute fpiculine cryfials, of 
an orange colour. The fecond and third folutions let fall 
none of their colour. The firft folution, droj^ped on pa- 
per, tinges it of a bright orange colour, the fecond gives 
a lively yellow colour, and the third a pale yellow. The 
firft folution, fufiiciently, diluted with fpirit of wine, 
makes a bright yellow ftain on paper, no way inclining 
to an orange, but exactly refembling that made by the 
fecond folution ; hence it feems probable, that an orange 
colour is only a deep yellow. Vitriolic asther readily 
diffolves the colouring part of this fubftance, and affords 
folutions of nearly the fame colour as thofe made with 
I fpirit 
