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On this occasion, Pyrophilus, I shall add, that finding the Glass-prism to be the usefullest Instrument Men have yet imploy'd about the Contemplation of Colours, and considering that Prisms hitherto in use are made of Glass, Transparent and Colourless, I thought it would not be amiss to try, what change the Superinduction of a Colour, without the Destruction of the Diaphaneity, would produce in the Colours exhibited by the Prism.
This was almost exactly what Anne Leech had confessed at Chelmsford. Her words were: "And that when This Examinant did not send and employ them abroad to do mischief, she had not her health, but when they were imploy'd, she was healthfull and well." We cannot point out the same similarity between the Huntingdonshire witchcrafts of 1716 and the Chelmsford cases.
I shall now onely add, what might perhaps have been more seasonably told you before; That the Reason why the way of Exploration of Salts hitherto deliver'd, succeeds in the Solution of Sublimate, depends upon the particular Texture of that Solution, as well as upon the differing Natures of the Saline Liquors imploy'd to Precipitate it.
Wee undertook the voyadge, but being arriv'd at Quebeck, wee found that jelosy & interest which some Persons had over those that had the absolute command, at that time, of the Trade in Canada, & whos Creatures were Imploy'd for new Discoverys, ordered things so that the Count De Frontinac, the Governor, took no care to perform what wee had ben promis'd hee should have don for us; so that finding myself slighted, I left my Brother-in-Law with his familly in Canada, & returned back again for France, intending to serve at sea in the fleet.
The next such as emerge from the Coalition of Metalline Particles with those of some Menstruum imploy'd to Corrode a Metall or Precipitate it; And the last, The Colours afforded by Metalline Bodyes either Colliquated with, or otherwise Penetrating into, other Bodies, especially fusible ones.
"The men are very bad off for Bread, and people cannot work without good food, besides it takes much time in baking Indian cakes for them in the woods, one hand continually imploy'd. "Pork, beef and corn is very scarce and dear, the two former not to be bought.
He was noted, and subject to severall censures at different times for his extravagancies: and if the full history of his debaucheries had bin known, no doubt would have been expell'd ye Coll., supposing that no interest had been imploy'd on his behalf, of which Mr. Casbury had some suspicion.
But to return to what I was saying before I began to make mention of our Blind Organist, what we have deliver'd touching the causes of the several Forms or Asperity that may Diversifie the Surfaces of Colour'd Bodies, may perchance somewhat assist us to make some Conjectures in the general, at several of the ways whereby 'tis possible for the Experiments hereafter to be mention'd, to produce the suddain changes of Colours that are wont to be Consequent upon them; for most of these Phænomena being produc'd by the Intervention of Liquors, and these for the most part abounding with very Minute, Active, and Variously Figur'd Saline Corpuscles, Liquors so Qualify'd may well enough very Nimbly after the Texture of the Body they are imploy'd to Work upon, and so may change the form of Asperity, and thereby make them Remit to the Eye the Light that falls on them, after another manner than they did before, and by that means Vary the Colour, so farr forth as it depends upon the Texture or Disposition of the Seen Parts of the Object, which I say, Pyrophilus, that you may not think I would absolutely exclude all other ways of Modifying the Beams of Light between their Parting from the Lucid Body, and their Reception into the common Sensory.
That indeed in his own Defence, he had imploy'd some others to chant his Praise; but they were such wretched Poetasters, and did it so awkardly, that their Performances prov'd more bitter Invectives than the Satyrs of the others; for whenever there happen'd the least Flaw in his Administration, he was sure to receive congratulatory Verses immediately upon it; and that was the Time they chose to proclaim the Happiness the Subject enjoy'd by his wise Management: And they carried this Matter to such a ridiculous Height, that there was not a Vice or a Folly, that either he or any of his Family were remarkable for, but they were prais'd for the contrary Vertues and Accomplishments.
Among the several changes of Colour, which Bodies acquire or disclose by Digestion, it it very remarkable, that Chymists find a Redness rather than any other Colour in most of the Tinctures they Draw, and ev'n in the more Gross Solutions they make of almost all Concretes, that abound either with Mineral or Vegetable Sulphur, though the Menstruum imploy'd about these Solutions or Tinctures be never so Limpid or Colourless.
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