Offense of corrupt solicitation to be defined by law.

The offense of corrupt solicitation of members of the legislature or of public officers of this state or of any municipal division thereof, and any occupation or practice of solicitation of such members or officers, to influence their official action, shall be defined by law, and shall be punished by fine and imprisonment in the penitentiary; and the legislature shall provide for the trial and punishment of the offenses enumerated in the two preceding sections, and shall require the judges to give the same specially in charge to the grand juries in all the counties of this state.