“In respect the cautionary obligation of Messrs. Hay and Malcolm, contained in their original bond, along with Mr. Orr as principal, expired in July 1773, and that the renewal of cautionary granted by Hay and Malcolm in October 1773, proceeds on the mistake that the septennial prescription was not then expired, and therefore was not binding on them; finds Mr. Henderson's missive of relief to Mr. Malcolm in Nov. 1773, could not bind Mr. Henderson to make any payment to Mr. Malcolm, who was not himself bound effectually; therefore sustains Mr. Henderson's defence, and assoilzies him from the action.”