16th. To prevent and prohibit the manufacture, keeping or storing of nitro-glycerine, and to regulate the keeping and storing of gunpowder, gun cotton, burning fluids, coal oils and other dangerous explosive materials, in said city, and to provide for the inspection of illuminating oils and fluids.

17th. To prohibit, restrain or regulate the discharge of fire-arms and the explosion of gunpowder and guncotton, and the firing of firecrackers and fireworks of any kind within the city.