In some other respects the Act has been less operative, and for an obvious reason. To legislate for health was new to you. It was only through the gradual investigation of officers, appointed under the Act, that you could become adequately informed of those sanitary requirements on which your ultimate legislation for the City must found itself. Only by their slow experience, only by failure as well as by success, was it possible that correct knowledge could be obtained of the powers really needful for fulfilling your sanitary intentions. In carefully watching the fluctuations of health amid your population; in investigating the causes which determine them; and in testing, on every occasion, how far these causes are amenable to the control of your Act of Parliament, I have arrived at the conclusions submitted to you in the present and in my previous Report. * * * * * To excuse the length at which I have addressed you, I have but another word to say. My apology consists in the assurance, which again I lay before you, that in spite of all your exertions, untimely and preventable death still prevails most largely in the population under your charge. If the deliberate promises of Science be not an empty delusion, it is practicable to reduce human mortality within your jurisdiction to nearly the half of its present prevalence. It is the sad prerogative of my Profession to have such knowledge of death as cannot lie within your experience. Knowing all that is implied in each one separate instance of its visitation--how much pain and sorrow, often how much bereavement and destitution, we, perhaps better than others, learn to appreciate that vast amount of social misery which has its symbol in the high death-rate of a population. It is from this practical point of view that I have ever estimated the importance of your functions, and have fixed the obligations of my own humbler office. Notwithstanding all that Medicine can achieve, to succour the body as it struggles against actual disease--notwithstanding those resources of drugs and handicraft, by which the physician or surgeon opposes death or mitigates pain in the detailed exercise of his art, all past experience, and every transaction of our daily practice, confirm the popular adage that _prevention is better than cure_. If this be true in any particular case, much more is it true in the largest application. While _Curative Medicine_--ministering step by step to the individual units of a population, can produce only minute and molecular changes in the health of society; Sanitary Law, embodying the principles of _Preventive Medicine_, may ensure to the aggregate masses of the community prolongation of life and diminution of suffering: in the working of some single enactment, it may affect the lives of generations of men, and may moderate in respect of millions the sources of orphanage and poverty.