| Edition | As printed | Type | Chars | Location | vs. previous |
|---|
| 1st ed. (1771) | ① VULCANO | article | 786 | vol. 3, p. 931 | |
| 2nd ed. (1778–83) | ② VULCANO | article | 176 | vol. 10, p. 8767 | |
| 7th ed. (1842) | ③ VULCANO | article | 316 | vol. 21, p. 704 | |
| 8th ed. (1853–60) | ④ VULCANO | article | 47 | vol. 21, p. 673 | |