If the provisions of Section 741.06 are not complied with within twenty days after the Chief of Police has served notice of the provisions of Section 741.06 upon the principal agent of a railroad company operating within the City, such company neglecting to comply therewith shall be liable to the City for the expense of such lighting, which the City shall have incurred by causing the lighting to be done, the same to be assessed and recovered in the manner stipulated in Section 741.08.