Whether the _quality_ of water supplied to the City by the existing Companies is such as it ought to be, or whether some purer source of supply may be found; whether their neglect of filtration, notwithstanding the important weight of testimony given in its favor, be not a serious dereliction of their duty to the public; whether the sanitary interests of the consumers of this first necessary of life can be properly protected, while at variance with those of the great trading companies which hold a virtual monopoly of the supply; whether it would not be an immense boon to the Citizens of London, that the control of the water-supply should be vested in the same jurisdiction as the drainage, paving, and sanitary cleansing of the district; are questions which have forced themselves closely on my attention while considering the sanitary affairs of the City, and on which I hope shortly to lay some special observations before this Committee or before the Court. I defer dwelling on these subjects at present, partly because they were not mentioned in your Committee’s specific reference; partly because I think it desirable to wait for the issue of the experiment which I have suggested with regard to the competing system of supply; and partly because I have reason to know that at the present moment a very extensive series of chemical investigations is proceeding under orders of the Government, with a view to ascertain the purest possible sources for the water-supply of the metropolis. The results of this inquiry, so far as they have transpired, appear to me so infinitely important in their relation to some of the questions just alluded to, that I think it expedient under the circumstances to wait for such new light as may accrue to our knowledge from the completion of these researches, before I touch the chemical division of the subject. I have, &c. &c. SECOND ANNUAL REPORT. TO THE HON. THE COMMISSIONERS OF SEWERS OF THE CITY OF LONDON. _November 26th, 1850._ GENTLEMEN, In obedience to that clause in your Act of Parliament under which my office is constituted, and which enjoins on your Officer of Health that he shall ‘report periodically upon the Sanitary condition of the City,’ I now submit to your Hon. Court my annual statement on this subject. I. MORTALITY OF THE CITY OF LONDON. During the fifty-two weeks, dated from September 30th, 1849, to September 28th, 1850, there died of the population under your charge 2752 persons. The rate of mortality, estimated from these _data_, for a population[30] of 125,500, would indicate somewhat less than twenty-two deaths (21·92) out of every thousand living persons. [30] With the required correction for increase of population, the death-rate was probably about 21·25 _per_ 1000.