| Edition | As printed | Type | Chars | Location | vs. previous |
|---|
| 1st ed. (1771) | ① THESIUM | article | 260 | vol. 3, p. 895 | |
| 4th ed. (1810) | ② THESIUM | article | 120 | vol. 20, p. 405 | |
| 5th ed. (1815) | ③ THESIUM | article | 120 | vol. 20, p. 405 | |
| 6th ed. (1823) | ④ THESIUM | article | 121 | vol. 20, p. 405 | |