
    Smith v. Northrup.
    Duplicity is to be taken advantage of by a special demurrer only. After a general demurrer, tlie party may not alter to a special.
    Actioh on note, dated 24th of March, A. D. 1789, wherein the defendant promised to pay to the plaintiff £80 in soldiers’ notes, in one year from the date; and that on the 26th of March, A. P. 1790, the defendant wrote at the bottom of said note, this may certify, that I will pay the interest of the above note, as by said note, etc. Demurrer to the declaration; which was closed last court and continued to this, and now the defendant moved to alter his plea from a general to a special demurrer, but not allowed.
    Exception to the declaration —■ That it was double and contained two distinct causes of action; which required different answers.
   Judgment — 'Declaration sufficient. Here is no duplicity; but if there was it cannot be taken advantage of under a general demurrer; the engagement wrote at the bottom of the note is no moi'e than the law implied without it. The soldiers’ notes which are promised being upon interest.  