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Of The Bixa Orellana And Appears Generally To Contain Two Colouring








matters, a yellow and a red, which are apt to adhere to each other and
produce orange. Anotta dissolves with difficulty in water, but readily
in alcohol and alkaline solutions, from which last it may be thrown down
as a lake by means of alum. Being, however, exceedingly fugitive and
changeable, it is not fit for painting; but is chiefly employed in
dyeing silk, and colouring varnishes and cheese. Very red cheese should
be looked upon with suspicion, for although the admixture of anotta is
in no way detrimental to health provided the drug be pure, it is
commonly adulterated with red lead and ochre. Several instances are on
record that Gloucester and other cheeses have been found contaminated
with red lead, through having been coloured with anotta containing it,
and that this contamination has produced serious consequences.





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