Experiments and Considerations Touching Colours (1664) by Robert Boyle
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page 12 of 285 (04%)
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_Next of his present manner of Handling it, and why he partly declines a
Methodical way_ (2.) _and why he has partly made use of it in the History of_ Whiteness _and_ Blackness. (3.) Chap. 2. _Some general Considerations are premis'd, first of the Insignificancy of the Observasion of Colours in many Bodies_ (4, 5.) _and the Importance of it in others_ (5.) _as particularly in the Tempering of Steel_ (6, 7, 8.) _The reason why other particular Instances are in that place omitted_ (9) _A necessary distinction about Colour premis'd_ (10, 11.) _That Colour is not Inherent in the Object_ (11.) _prov'd first by the Phantasms of Colours to_ Dreaming _men, and_ Lunaticks; _Secondly by the sensation or apparition of Light upon a Blow given the Eye or the Distemper of the Brain from internal Vapours_ (12.) _The Author recites a particular Instance in himself; another that hapn'd to an Excellent Person related to him_ (13.) _and a third told him by an Ingenious Physician_ (14, 15.) _Thirdly, from the change of Colours made by the Sensory Disaffected_ (15, 16.) _Some Instances of this are related by the Author, observ'd in himself_ (16, 17.) _others told him by a Lady of known Veracity_ (18.) _And others told him by a very Eminent Man_ (19.) _But the strange Instances afforded by such as are Bit by the_ Tarantula _are omitted, as more properly deliver'd in another place_. (20.) Chap. 3. _That the Colour of Bodies depends chiefly on the disposition of the Superficial parts, and partly upon the Variety of the Texture of the Object_ (21.) _The former of these are confirm'd by several Persons_ (22.) _and two Instances, the first of the Steel mention'd before, the second of melted Lead_ (23, 24.) _of which last several Observables are noted_ (25.) _A third Instance is added of the Porousness of the appearing smooth Surface of Cork_ (26, 27.) _And that the same kind of Porousness may be also in the other Colour'd Bodies; And of what kind of Figures, the |
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