Heads of lectures on a course of experimental philosophy, particularly including chemistry, delivered at the new college in Hackney / by Joseph Priestley.
- Joseph Priestley
- Date:
- Printed for Wm. Jones, no. 86, Dame-Street, and J. Rice, no. 2, College-Green,
Licence: Public Domain Mark
Credit: Heads of lectures on a course of experimental philosophy, particularly including chemistry, delivered at the new college in Hackney / by Joseph Priestley. Source: Wellcome Collection.
Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.
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![The regulus of arfenic is of a yellow colour, fubje6t to tarnifh or grow black, by expofure to the air, very brittle, and of a laminated texture. In clofe vefTels it wholly fublimes, but burns with a fmall flame in pure air. Vitriolic acid has little a6l:ion upon this femi-metal, except when hot] but the nitrous acid ads readily upon it, and like wife difiblves the calx, as does boil- ing marine acid, though it afFeds it very little when cold. Moft of the metals unite with the re- gulus of arfenic, Dephlogifticated marine acid con* verts the calx of arfenic into arfenical acid by giving it pure air. The acid of arfenic ads more or lefs upon all metals, but the pheno- mena do not appear to be of much importance, ^ Jhe](https://iiif.wellcomecollection.org/image/b21169408_0173.jp2/full/800%2C/0/default.jpg)
