
    Dana v. Roberts.
    A juryman may not converse with any person not of tlie jury, upon ' tlie merits of a cause under consideration. A juryman whose conduct is impeached by a motion in arrest may not be a witness.
    Verdict for the plaintiff. Motion in arrest of judgment, that one of Said jurors while they had the cause under consideration, related to a Mr. Merrils, the full state of the case, and of the evidence on both sides; the facts being proved, the court set aside the verdict.
   By the Court.

Tlie principal guard upon jurors in tiiis state, is, tlieir oath and tlieir virtue — if they are suffered to enter into conversation with people respecting the causes they have under consideration, the purity of trials hy jury, the great harrier of liberty and justice will be corrupted; it ought therefore to be guarded with the most vigilant attention. The juror, ivas not admitted to testify upon tlie motion, either to criminate or exculpate himself. 1 Durn. 11; 1 Str. 642.  