A faithful register of births, marriages, and deaths, is wished for by enlightened philanthropists of all advanced countries, far more as a test of national morals and the national welfare, than as a matter of the highest social convenience. For this the physiologist waits as the means of determining the physical condition of the nation; as a guide to him in suggesting and prescribing the methods by which the national health may be improved, and the average of life prolonged.--For this the legislator waits as the means of determining the comparative proneness of the people to certain kinds of social offences, and the causes of that proneness; that the law may be framed so as to include (as all wise laws should include) the largest preventive influence with the greatest certainty of retribution.--For this the philanthropist waits as a guide to him in forming his scheme of universal education; and without this,--without knowing how many need education altogether,--how many under one set of circumstances, and how many under another,--he can proceed only in darkness, or amidst the delusions of false lights. He is only perplexed by the partial knowledge, which is all that his utmost efforts enable him to obtain. If he goes into every house of every town and village in his district, he is no nearer to an understanding of the intellectual and moral condition of the nation than he was before: for other districts have a different soil and different occupations; the employments of the people, their diseases and their resources, are unlike; and, under these diverse influences, their physical, and therefore moral and intellectual condition, must vary. The reports of Philanthropic Societies do little more for him, drawn up as they are with partial objects and under exclusive influences: parliamentary disclosures are of little more use. Vague statements about the increase of drunkenness, resistance to one kind of law or another, alarm and distress him; but such statements again are partial, and so often brought forward for a particular object, that they afford no safe guide to him who would form a general preventive or remedy. Thus it is under all partial methods of observation; but when the philanthropist shall gain access to a register of the national births, marriages, and deaths, he will have under his hand all the materials he requires, as completely as if he were hovering over the kingdom, comprehending all its districts in one view, and glancing at will into all its habitations.