Said board shall appoint the necessary superintendents and employes for the cemetery; expend the money provided for the care and improvement of the grounds; enforce the ordinances of the city made for the management and care thereof and make such regulations for the burial of the dead, the care and protection of the grounds, monuments and appurtenances of the cemetery, and the orderly conduct of persons visiting the grounds, as may be consistent with the ordinances of the city and the laws of the state.