| Edition | As printed | Type | Chars | Location | vs. previous |
|---|
| 2nd ed. (1778–83) | ① VOLCANO | article | 31,470 | vol. 10, p. 8754 | |
| 3rd ed. (1797) | ② VOLCANO | article | 19,199 | vol. 18, p. 685 | |
| 4th ed. (1810) | ③ VOLCANO | article | 116 | vol. 20, p. 581 | |
| 5th ed. (1815) | ④ VOLCANO | article | 116 | vol. 20, p. 581 | |
| 6th ed. (1823) | ⑤ VOLCANO | article | 116 | vol. 20, p. 581 | |