If any person, after the expiration of six months from the passing of this act, shall exercise any offices or appointments, the exercise of which is by this act declared to be incompatible, every person so offending shall, for every such offense, being thereof legally convicted in any court of record, forfeit and pay any sum not less than fifty nor more than five hundred dollars, at the discretion of the court, one moiety of the said forfeiture to be paid to the overseers, guardians or directors of the poor of the township, district, county or place where such offense shall have been committed, to be applied to the support of the poor, and the other moiety thereof to the prosecutor who shall sue for the same.