Dictionarium polygraphicum: or, The whole body of arts regularly digested ... adorned with proper sculptures, curiously engraven on more than fifty copper plates .. (1735)
Barrow, John, teacher of mathematics · London, C. Hitch and C. Davis [etc.] · leaf 463
/:/.ir.y<^/vxxii. … r T Lf R Thefe Turquoifes^ on the contrary, are naturally whitifli, oryellowifh, of a colour as common as that of a free-ftone j andby oppofmg them for fome time to the adion of the fire, theyaulime a blue colour. Tho it feems a paradox, yet M. IReaumur has made it ex-ceeding probable, that…
Art · Industrial arts
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
