And that also
such Liquors, as we have been speaking of, may greatly Discompose the
Textures of many Bodies, and thereby alter the Disposition of their
Superficial parts, the great Commotion made in Metalls, and several other
Bodies by _Aqua-fortis_, Oyl of _Vitriol_, and other Saline _Menstruums_,
may easily perswade us, and what such Vary'd Situations of Parts may do
towards the Diversifying of the manner of their Reflecting the Light, may
be Guess'd in some Measure by the Beating of Transparent Glass into a White
Powder, but farr better by the Experiments lately Pointed at, and hereafter
Deliver'd, as the Producing and Destroying Colours by the means of subtil
Saline Liquors, by whose Affusion the Parts of other Liquors are manifestly
both Agitated, and likewise Dispos'd after another manner than they were
before such Affusion. And in some _Chymical_ Oyls, as particularly that of
Lemmon Pills, by barely Shaking the Glass, that holds it, into Bubbles,
that Transposition of the Parts which is consequent to the Shaking, will
shew you on the Surfaces of the Bubbles exceeding Orient and Lively
Colours, which when the Bubbles relapse into the rest of the Oyl, do
immediately Vanish.
24. I know not, _Pyrophilus_, whether I should mention as a Distinct way,
because it is of a somewhat more General Nature, that Power, whereby a
Liquor may alter the Colour of another Body, by putting the Parts of it
into Motion; For though possibly the Motion so produc'd, does, as such,
seldome suddenly change the Colour of the Body whose Parts are Agitated,
yet this seems to be one of the most General, however not Immediate causes
of the Quick change of Colours in Bodies.
Pages:
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93