To manifest that the Tincture of Lignum Nephriticum, is not the only liquor that will show two different colours as tis held between the eye and the light or lookt on when the beholders backe is turned upon the light. I caus'd some hard soap to be carefully distil'd in a Retort and having taken off that part of the distil'd matter that was very fluid, I found as I expected, that this liquor exhibited two several colours, as t'was differently look't upon with reference to the light (which ought not to be weak) but this oyly Liquor differed from Tincture of Lignum Nephriticum in two main particulars, first, that the Orange colour or (some other that is near of kin to it) which is usually to be observ'd in the tincture of Lignum Nephriticum when tis held against the light, was not only somewhat different from that of our saponary liquor, as being more darke & troubled, but was best seen when the vial that contain'd it was held not against, but from the light. The other circumstance was, that instead of the ceruleous colour that in a due position is exhibited by the Tincture, our distil'd liquor show'd a green colour, and this also was remarkable in our liquor, that it afforded these Phenomena only at the first destillation, for when t'was rectifyed it became a little more diaphanous, but lost it's disposition to appear green, retaineing only a kind of orenge colour.