| Edition | As printed | Type | Chars | Location | vs. previous |
|---|
| 1st ed. (1771) | ① APPROACH | article | 100 | vol. 1, p. 340 | |
| 2nd ed. (1778–83) | ② APPROACH | article | 100 | vol. 1, p. 542 | |
| 4th ed. (1810) | ③ APPROACH | article | 99 | vol. 2, p. 481 | |
| 5th ed. (1815) | ④ APPROACH | article | 100 | vol. 2, p. 481 | |
| 6th ed. (1823) | ⑤ APPROACH | article | 100 | vol. 2, p. 481 | |