Copy 1

An account of some experiments and observations on tar-water: wherein is shown the quantity of tar that is therein. And also a method proposed, both to abate that quantity considerably, and to ascertain the strength of the tar-water / Which was read before the Royal society. By Stephen Hales.

  • Stephen Hales
Date:
1745
Catalogue details

Licence: Public Domain Mark

Credit: An account of some experiments and observations on tar-water: wherein is shown the quantity of tar that is therein. And also a method proposed, both to abate that quantity considerably, and to ascertain the strength of the tar-water / Which was read before the Royal society. By Stephen Hales. Source: Wellcome Collection.

    13/38 page 7
    the Bottom of the Strainer. There were fixed on each fide of the Strainer Pieces of Wood two Feet long, like the Poles of Chairmens Chairs, on thefe the Strainer refted at a proper diftance over the Pot of Water. Fig. A B the Strainer-box. C C DD the Arms or Poles two Feet long to reft it oit. E E the Plug. Z Z, a wooden Pin, which hindered the Bottom of the Plug from prefjing hard on the Bottom of the St rawer. I found but eighteen Grains of fyrupy Tar, on evaporating a Pint of Tar-water thus prepared, by the fame old Tar’s dropping
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