[995] De Natura Fossil. lib. iii. p. 215; in which he speaks of iron pins with tinned heads.
[996] Page 135, a and b, pp. 136, 375.
[997] Mémoires de l’Acad. 1720, p. 195. Basil Valentine had before taught how to separate the volatile alkali from sal-ammoniac by means of the fixed alkali.
[998] Nouveaux Mémoires des Missions de la Compag. de Jesus, ii.
[999] Mémoires de l’Acad. 1720, p. 191.
[1000] Voy. au Levant.
[1001] Mémoires de l’Acad. 1735, p. 107.
[1002] Mém. de l’Acad. 1723, p. 221, where a figure is given of it.
[1003] Gaubii Adversaria. Leidæ 1771, 4to, p. 138.
[1004] [As Dr. Royle observes, in his Essay on the Antiquity of Hindoo Medicine, p. 41, this salt must have been familiar to the Hindoos ever since they have burnt bricks, as they now do, with the manure of animals; as some may usually be found crystallized at the unburnt extremity of the kiln.]