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Updated: May 4, 2025
Next, I found, that though the want of a sufficient Liveliness in either of the Compounding Colours, or a light Error in the manner of making the following Tryals, was enough to render some of them Unsuccessfull, yet when all necessary Circumstances were duely observ'd, the Event was answerable to our Expectation and Desire.
In the P.M. had a light breeze at North-East until 4 o'clock, when it fell calm, and continued so until 11, at which time a breeze sprung up at West-North-West, with which we stood to the Northward. In the Morning found the Variation to be 22 degrees 46 minutes; at Noon the observ'd Latitude was 14 Miles to the Northward of the Log, which shews that the current must have shifted.
By this means we observ'd, that the Beams trajected through Blew and Yellow compos'd a Green, that an intense and moderate Red did with Yellow make differing degrees of Saffron, and Orange Tawny Colours, that Green and Blew made a Colour partaking of both, such as that which some Latin Writers call Pavonaceus, that Red and Blew made a Purple, to which we might add other Colours, that we produc'd by the Combinations of Glasses differingly Ting'd, but that I want proper Words to express them in our Language, and had not when we made the Tryals, the Opportunity of consulting with a Painter, who perchance might have Suppli'd me with some of the terms I wanted.
Tin Corroded by Aqua-fortis till the Menstruum will work no farther on it, becomes exceeding White, but as we elsewhere note, does very easily of it self acquire the consistence, not of a Metalline Calx, but of a Coagulated matter, which we have observ'd with pleasure to look so like, either to curdled Milk, or curdled Whites of Eggs, that a person unacquainted with such Solutions may easily be mistaken in it.
There is a Story in some Authors, that having put Human Seed into a Viol close stopp'd, and plac'd it for some time in a Dunghill that was moderately hot; they observ'd that the Particles drew up themselves in such Order, as to assume the Form of a Child. But they agree, that 'twas impossible to Nourish this Infant, which according to them, perish'd before 'twas intirely Form'd.
Then he melted pitch and wax with sulphur, which he drank down as it flamed: I saw it flaming in his mouthe a good while; he also took up a thick piece of iron, such as laundresses use to put in their smoothing-boxes, when it was fiery hot, held it between his teeth, then in his hand, and threw it about like a stone; but this I observ'd he cared not to hold very long.
But having observ'd that all their principles were to be borrowed from Philosophy, in which I had yet found none that were certain, I thought it were needfull for me in the first place to endevor to establish some, and that this being the most important thing in the world, wherein precipitation and prevention were the most to be feared, I should not undertake to performe it, till I had attain'd to a riper Age then XXIII. which was then mine.
And you may remember, that we observ'd a Green to be produc'd, when in the same Darkn'd Room we look'd at the Hole at which alone the Light enter'd, through the Green and Yellow parts of a sheet of Marbl'd Paper laid over one another.
Again, it must be observ'd, that as the beating or churning of Cream, to bring it to Butter, is only to separate the oily from the watery Parts of the Cream, so when once you begin to churn, or beat the Cream, you must continue to churn or beat it in the most constant manner you can, till the Butter is made: for if you had perhaps beat the Cream within three or four Minutes of its becoming Butter, if you leave off the Work but a Minute, the oily and watery Parts will return to one another, and will require as much Labour as before to separate them: it is like Oil and Vinegar that have been mix'd by Labour, and then let alone for a Minute or two, they will divide and separate from one another, as much as if they had never been mix'd; but the beating of it too violently, will make the Butter oily, as observ'd before.
Wind South-East to South by East; course North 20 degrees West; distance 98 miles; latitude 4 degrees 32 minutes North, longitude 21 degrees 58 minutes West. Monday, 20th. Dark, cloudy, unsettled weather, with rain. At Noon the Observ'd Latitude was 27 Miles to the Northward of the Log. Sailing in Company with the Fleet.
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