"Every perception is to some degree an act of creation, and every act of memory is to some degree an act of imagination."

-- Gerald Edelman, Second Nature: Brain Science and Human Knowledge
10 Of colours vide pag 6912 Of colours vide pag 69Of colours vide pag 69The Newton Project Knowledge Graph2020-10-08Journal46 That the colour of a body bee altered by a cleare liquor tis commonly required that it have salt yet faire water powred on the grey & friable calix of powdred Vitriol melted by a gentle heate till it colour change & the liquor being set by in a close violl for some days it will tune to a vitriolate colour 47 Take Lignum Nephriticum (the infusion of which in faire water is good against the stone of the kidneys) put a handfull of thin slices of it into 3 or 4 pound of pure spring water after it hath infused there a night put the water into a cleare violl, & if you see the light through it it appeares of a golden colour (excepting sometimes a sky coloured circle at the top) but if the infusion was too strong the liquor will then appeare darke & reddish. But if your eye is twixt the liquor & light it appeares ceruleous: & Acid salts destroy the blew colour & sulphureous saltes restore it againe, without making any change in the golden colour. Which may bee usefull to the finding whither bodys abound more with acid or sulphureous Salts. Continue reading…