Howell Edmunds Jackson,
Horn v. Detroit Dry-Dock Company…
“ While an accord and satisfaction may be set aside, if it is shown that the parties to the transaction were mutually mistaken in regard to the material facts, such mistake must be set up by proper pleading. It is not available where it is neither averred in the bill, nor referred to in a plea in bar and a general replication thereto, which merely puts in issue the truth of the plea. ”
