A _Saline_ liquor therefore, mixt with another ting'd liquor, may alter the
colour of it several ways, either by altering the refraction of the liquor
in which the colour swims: or secondly by varying the refraction of the
coloured particles, by uniting more intimately either with some particular
_corpuscles_ of the tinging body, or with all of them, according as it has
a _congruity_ to some more especially, or to all alike: or thirdly, by
uniting and interweaving it self with some other body that is already
joyn'd with the tinging particles, with which substance it may have a
_congruity_, though it have very little with the particles themselves: or
fourthly, it may alter the colour of a ting'd liquor by dis-joyning certain
particles which were before united with the tinging particles, which though
they were somewhat _congruous_ to these particles, have yet a greater
_congruity_ with the newly _infus'd Saline menstruum_. It may likewise
alter the colour by further dissolving the tinging substance into smaller
and smaller _particles_, and so _diluting_ the colour; or by uniting
several _particles_ together as in precipitations, and so deepning it, and
some such other ways, which many experiments and comparisons of differing
trials together, might easily inform one of.
From these Principles applied, may be made out all the varieties of colours
observable, either in liquors, or any other ting'd bodies, with great ease,
and I hope intelligible enough, there being nothing in the _notion_ of
colour, or in the suppos'd production, but is very conceivable, and may be
possible.
Pages:
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201