The works of the Honourable Robert Boyle, Esq., epitomiz'd by Richard Boulton ... ; illustrated with copper plates.
About this Item
Title
The works of the Honourable Robert Boyle, Esq., epitomiz'd by Richard Boulton ... ; illustrated with copper plates.
Author
Boyle, Robert, 1627-1691.
Publication
London :: Printed for J. Phillips ... and J. Taylor ...,
1699-1700.
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Subject terms
Physics -- Early works to 1800.
Chemistry -- Early works to 1800.
Medicine -- 15th-18th centuries.
Cite this Item
"The works of the Honourable Robert Boyle, Esq., epitomiz'd by Richard Boulton ... ; illustrated with copper plates." In the digital collection Early English Books Online 2. https://name.umdl.umich.edu/A28936.0001.001. University of Michigan Library Digital Collections. Accessed May 2, 2024.
Pages
EXPERIMENT II, III, IV.
Others think that the cause of the Heat of Quick-lime proceeds from some fiery Empyru∣matical Atoms lodged in the substance of the Stone, when calcin'd, and set at liberty in the form of Effluvia; but this Hypothesis is not without some difficulties, since no such Heat succeeds an affusion of Water upon Minium, or Crocus Martis per se, tho' their increase of weight argues that they are stuffed with fiery and metalline Particles: To which I shall add, that I knew two Liquors, which being several times separated, and reconjoined without addi∣tion, did at each Congress acquire a sensible heat; so Salt of Tartar several times freed from Water, will produce Heat when mixed again with that Water; which shews that the violence of the Fire is not requisite to impress upon all calcin'd Bodies that will heat with Wa∣ter, what passes for an Empyreum. And this Phaenomenon I am apt to believe proceeds from
descriptionPage 194
a disposition of the Texture of the Salt being stocked with store of igneous Parts, which upon an ingress of Water pressed into the Pores of the Body, by the weight of the Atmosphere, are apt to break the Texture of that Body, and to put them in motion, so as to produce a sensi∣ble Heat. And that the Ferment depends up∣on the peculiar Texture of the Salt, I am per∣swaded, and a constipation of the Pores of it; since Sal-Armon. dissolv'd in Water and boiled to a dry Salt, was not so much impregnated with fiery Parts, as to cause a Heat upon its mix∣ture with Water again, but a considerable degree of Cold; and tho' one would expect a greater cognation betwixt the Particles of fire adhering to Quick-lime, and Spirit of Wine wholly inflammable; yet the latter poured up∣on the former did not produce any sensible in∣calescence, or dissolution of it; and when this Spirit was soak'd into it, I poured Water upon it, without perceiving the least Heat or the Lime broken, till within a few hours after; so that the Spirit being sucked into the most capa∣cious Pores of the Lime, and associating with the Water, rendred it more unfit to penetrate the minuter Pores, and to dissolve the Lime.
Notes
The effects of a mix∣ture of Salt of Tartar and Water.