§ 1. That no person shall, within this Commonwealth, on the Sabbath day, enter or go upon the land of another person to catch, shoot, or kill any birds, fowl, or animal of any kind; and any such person having in his possession a gun at the time, or after he enters upon the premises of another as aforesaid, shall, upon proof, be guilty of a violation of this act, and, upon conviction thereof, by proceedings before any justice of the peace, in any county of the State, in the name of the Commonwealth, be fined a sum not less than $20 and not more than $50 and costs, to half of which fines the informer shall be entitled, and the other half shall go to the Commonwealth.