[28]. Phil. Tranſ. 1767.
[29]. Henchel Betheſda port.
[30]. Bomare Dictionaire.
[31]. I have lately diſcovered a ſpecimen of Terra Ponderosa aerata got out of a mine in this kingdom. It is very pure, and in a large maſs. As this ſubſtance is a new acquiſition to mineralogy, and may be turned to uſeful purpoſes in Chemiſtry, I intend ſhortly to preſent a more particular account of it to the Royal Society. W.
[32]. Conf. Præl. Schefferi, § 188, not. 2.
[33]. Margraaf Kl. Schrift. tom. II. p. 191.
[34]. I found it in conſiderable quantity in the Nevil Holt water, when I analyzed it ſix years ago; and it is probable that the Ballycaſtle water in Ireland, likewiſe contains it. W.
[35]. In the original the word is MAGNESIUM, but it is here changed, by the advice of Dr. Swediar and the concurrence of profeſſor Bergman to MANGANESIUM, in order to prevent confuſion from its ſimilarity to Magneſia. W.
[36]. Mr. Monnet de aquis mineralibus.
[37]. Opusc. chem. vol. I. p. 394–399.