The ground taken by the plaintiff is, that as the defendant in his plea had alleged that the plaintiff’s debt was proveable under the bankrupt, act, and that it was not created in consequence of the defalcation of the defendant as a public officer, or while he was acting in a fiduciary capacity, he was bound, according to a general principle in the law of evidence—that he who asserts the affirmative must prove it—to prove these facts so alleged by evidence aliunde the discharge and certificate. The general rule as contended for, is undoubtedly correct; but there is an exception to it. When a cause of action or matter of defence under a statute is pleaded, which statute contains a proviso or exception in the same substantive clause on which the action or defence is founded, although the declaration or plea must deny that the cause of action or defence is within the proviso or exception, yet it is not necessary for the party to prove the negative; but it rests with the other party to prove the affirmative. As, for instance, in an action on the game laws, though the plaintiff must aver, in order to bring the defendant within the act, that he was not duly qualified ; still it is not necessary to disprove his qualifications, *437but it is for the defendant, if he can, to prove himself qualified. (Spieres v. Parker, 1 T. R. 144; Jelfs v. Ballard, 1 B. & P. 468; Sheldon v. Clark, 1 John. Rep. 513; The Apothecaries' Company v. Bentley, Ryan & Moody, 159; Cowen & Hill’s Notes, 490; Potter v. Deyo, 19 Wend. 361.)
The discharge is presumptive evidence of all the facts asserted in it, and is conclusive until overthrown by evidence of some fraud which by the act avoids it. Debts arising out of a violation of an official or private trust are not affected by it, unless the creditor chooses to prove the demand under the bankruptcy. The discharge, it is true, is general in its terms, and prima facie is a discharge of the bankrupt from all "his debts. But the creditor may, notwithstanding, show that his debt is of the excepted class. The onus, however, is on him, and if he fails to make the proof, the debt will be taken to be one of an ordinary character.
The common pleas erred, and its judgment must be reversed.
Judgment reversed.