If any person shall sell or offer for sale as human food, the flesh of any animal which shall have died a natural death, or been killed or injured by any accident; or shall sell, or offer for sale, or ship for sale, as human food, the flesh of any diseased animal, or of any dog, cat, or other like unclean animal, such person shall be fined, on conviction, not less than one hundred dollars and imprisoned not less than thirty days.