Smith Thompson,
United States v. Linn (42 U.S. 104…
“ Heermance, 1 Johns. 92, the court say there is no rule in pleading, better or more universally established, than, that whenever new matter is introduced the pleading must conclude with an averment. And the reason, say the court, is obvious, because the plaintiff might otherwise be precluded from setting forth matter which would maintain his action, although the matter pleaded by the defendant might be true. ”
