Witness instrumentary

WITNESS INSTRUMENTARY, Scotch law. He who has attested a deed or other writing.
     2. When witnesses attest a deed without knowing the grantor, and seeing him subscribe, or bearing him own his subscription, and the deed happens to be forged, the witnesses are declared accessory to forgery. Ersk. Pr. L. Scot, 4, 4, 37; 6 Hill, N. Y. Rep. 303.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.