A series of experiments relating to phosphori and the prismatic colours they are found to exhibit in the dark / by B. Wilson ... ; Together with a translation of two memoirs, from the Bologna Acts [1744 & 1747], upon the same subject, by J.B. Beccari.

  • Benjamin Wilson
Date:
1775
Catalogue details

Licence: Public Domain Mark

Credit: A series of experiments relating to phosphori and the prismatic colours they are found to exhibit in the dark / by B. Wilson ... ; Together with a translation of two memoirs, from the Bologna Acts [1744 & 1747], upon the same subject, by J.B. Beccari. Source: Wellcome Collection.

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    190 ] <rers; for all thefe bodies, without the application of fire, are pretty ftroeg phofpliori. Thou^ it is true,-that this quality is improved byhre, yet it exifts without it. If I had known this when I recommended the roafling of thefe fubftances, I (hould certainly have mentioned it, left it might have been imagined, that becaufe I propofed arti¬ ficial means, that therefore thefe bodies were not naturally phofpliori. 31. The flefti of animals feems to be the leaft phofphoric of all their parts. For which realbn, in my firft paper, 1 did not reckon any of them phofphori, except white meats and thofe roafted. For I doubted fo much with refpedt to brown meats, which colour I knew to be oppofite to phofphorifm, that I paid no attention to them. And if I had obferved them, as my apparatus was . . then fo imperfedl, I believe I could have made of them: fo languid and tranfient is even that light which they receive from the ftrongeft fun-beams. It is otherwife as to bones. 'But in this relpe(ft I have nothing to add to what was before written. It is now fhewn, that all the j folid parts of animals are phofphori. And if any of them fhine with difficulty, this may be lef- fened by drying them properly, as was before ob*- ferved of vegetables. 32. With refpedt to animal juices, I fhould imagine that they are all phofphoric, fince I have at length difcovered that milk and fat are fo, though I had formerly been of opinion, that milk was
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