[8]. The moſt highly coloured and fuming nitrous acid may readily be rendered colourleſs by boiling it haſtily in an open veſſel. Part of the acid flies off, carrying the ſuperabundant phlogiſton along with it, in the form of nitrous air. W.
[9]. N. Acta Upſ. vol. II. p. 202.
[10]. M. Margraaf.
[11]. I have ſome reaſon to believe that the Nevil Holt water does contain ſome of this acid in an uncombined ſtate. W.
[12]. Opuſcul: vol. II. p. 40.
[13]. Called Derbyſhire fluor; Corniſh fluor, blue John. W.
[14]. D. Scheele Act. Stockh. 1778.
[15]. It has been lately obtained in great abundance from bones. W.
[16]. Opuſc. chem. vol. II. p. 424.
[17]. De Sale ſedativo naturali, 1778.