E. Cobham Brewer 1810–1897. Dictionary of Phrase and Fable. 1898.
Ac’cident.
A logical accident is some property or quality which a thing possesses, but which does not essentially belong to it, as the tint of our skin, the height of our body, the redness of a brick, or the whiteness of paper. If any of these were changed, the substance would remain intact.
