[10] It would seem premature to discuss what might be the best constitution of such Local Boards for the metropolis; but it will appear to the reader, on a moment’s reflection, that there would be no difficulty in finding materials for their organisation. If, according to suggestions lately ventilated, municipal institutions should be given to the parts of London hitherto without them; these new corporations would probably have sanitary functions allotted them, and might readily become Local Boards of Health under such a constitution as I have sketched. If, on the other hand, our present non-municipal system were to be continued, probably our several Boards of Guardians might seem specially proper to act as Local Boards of Health; first, as being elected representative bodies, already invested with certain authority of the kind--as, for instance, under the Nuisances Removal Act; secondly, because various of their officers would be almost indispensable parts of any sanitary machinery. Indeed, my experience of such matters suggests it to me as not unimportant, that, under any arrangement which may be made, the jurisdiction of Local Boards of Health should, at least in area, be conterminous with Poor Law Unions; so that those who administer sanitary affairs--affairs which are always chiefly relative to the poor--may, as far as possible, in their several districts, come into relation with single sets of Poor Law officers. I have one word more to say about the Reports. They have been received by the public with such remarkable indulgence and favour, that I feel some anxiety lest I may seem to have plumed myself with other feathers than my own. Let me, therefore, at least in part, confess my debts. Before my first enlistment in the service of public health, others had fought this great cause with rare courage and devotion; establishing its main principles in a manner to require no corroboration, and to admit little immediate increase. The true patriarchs of the cause in this country are the present working members of the General Board of Health. The constitution of my city appointment is quite independent of this Board; but I should be acting an unworthy part if I refrained from acknowledging, that, in innumerable instances, I have gathered most valuable knowledge from the Board’s official publications, and that, in personal intercourse with its members and officers, I have had abundant reason to be grateful for information invariably given with that frank kindness which belongs to brotherhood in science, and to sympathy for common objects.