Section 12. That the annual salary of the Marshal of Police of the "Philadelphia Police district" shall be two thousand dollars per annum, to be paid quarterly out of the funds of the treasury of the county of Philadelphia, and the compensation of the lieutenants of police of the said police district shall be two dollars per day, to be paid out of the treasuries of the districts for and by which they may have been severally appointed; and the said lieutenants may be removed from office by the said marshal of police for incompetency, misconduct, or other misfeasance; and the policemen who may be appointed by the said marshal to fill vacancies shall receive the same compensation and be paid in the same manner as if they had been regularly nominated by the districts comprising the said police district.