[js1138]

1800 is not only correct but easier to remember.

For every google hit citing 1800, there are a hundred saying 1802. There are multiple revisions and dates of publication. I suspect that the 1802 edition is the one that became widely distributed, and influenced people like Darwin.

[RightWhale]

Never saw the 1902 edition. Got the 1800 edition. Paley would be an evolutionist were he alive now.