[ 455 ] 
Mr. Miller has now only the bark of the Cafhew- 
tree left to fupport his argument. This the above- 
mentioned Brafilian writers fay, that the native In- 
dians of Brafil ufed to dye their cotton-yarn with ; 
but of what colour no mention is made. And whe- 
ther this bark is ufed to give ftrength to this yarn, 
as we dye and tan our fifhing-nets with oak-bark, or 
for ornament, is uncertain for a great deal of this 
yarn was ufed in the making their net-hammocks, 
as well as their coarfe garments. 
Mr. Miller then introduces Sir Hans Sloane, in 
oppofition to Dr. Browne, whofe Hiftory of Jamaica 
I had quoted, to prove that the juice of the Acajou 
was of the fame nature and properties with that of 
the gum-arabic, and confequently not fit for varnifh : 
whereas it plainly appears from the foregoing quota- 
tions, taken from Sir Hans Sloane, that Dr. Browne 
is right, and agrees exactly in opinion with him. 
He then makes Sir Hans fay, that the inhabitants 
of Jamaica ftain their cottons with the bark of the 
Cafhew-nut tree. By this, one would naturally con- 
clude, that Mr. Miller has been endeavouring to 
prove, in oppofition to the Abbe Mazeas’s letter, 
that the art of painting or ftaining cottons of a fine 
deep black colour, equal to that difcovered by the 
Abbe Sauvages, as defcribed in his experiments on 
the Carolina Toxicodendron, was pradtifed by the 
Englifh forty or fifty years ago in Jamaica. 
If this was the cafe, it is fomething furprifing, 
that, notwithflanding our great intercourfe with that 
ifland, the callico-printers of England never got in- 
telligence of this valuable fecret. 
Further, if Mr. Miller will confult Pifo and Mar- 
grave, 
