| Edition | As printed | Type | Chars | Location | vs. previous |
|---|
| 2nd ed. (1778–83) | ① PURITY | article | 93 | vol. 9, p. 6545 | |
| 3rd ed. (1797) | ② PURITY | article | 98 | vol. 15, p. 673 | |
| 4th ed. (1810) | ③ PURITY | article | 98 | vol. 17, p. 524 | |
| 5th ed. (1815) | ④ PURITY | article | 98 | vol. 17, p. 524 | |
| 6th ed. (1823) | ⑤ PURITY | article | 98 | vol. 17, p. 524 | |