But since dependence upon wages for the support of life will be found closely related to the question of poverty, it is convenient to throw some preliminary light on the measure of poverty, by figures bearing on the general industrial condition of the wage-earning class. To measure poverty we must first measure wealth. What is the national income, and how is it divided? will naturally arise as the first questions. Now although the data for accurate measurement of the national income are somewhat slender, there is no very wide discrepancy in the results reached by the most skilful statisticians. For practical purposes we may regard the sum of £1,800,000,000 as fairly representing the national income. But when we put the further question, "How is this income divided among the various classes of the community?" we have to face wider discrepancies of judgment. The difficulties which beset a fair calculation of interest and profits, have introduced unconsciously a partisan element into the discussion. Certain authorities, evidently swayed by a desire to make the best of the present condition of the working-classes, have reached a low estimate of interest and profits, and a high estimate of wages; while others, actuated by a desire to emphasize the power of the capitalist classes, have minimized the share which goes as wages. At the outset of our inquiry, it might seem well to avoid such debatable ground. But the importance of the subject will not permit it to be thus shirked. The following calculation presents what is, in fact, a compromise of various views, and can only claim to be a rough approximation to the truth. Taking the four ordinary divisions: Rent, as payment for the use of land, for agriculture, housing, mines, etc.; Interest for the use of business capital; Profit as wages of management and superintendence; and Wages, the weekly earnings of the working-classes, we find that the national income can be thus fairly apportioned-- Rent £200,000,000. Interest £450,000,000. Profits £450,000,000. Wages £650,000,000.[1] Total £1750,000,000. Professor Leone Levi reckoned the number of working-class families as 5,600,000, and their total income £470,000,000 in the year 1884.[2] If we now divide the larger money, minus £650,000,000, among a number of families proportionate to the increase of the population, viz. 6,900,000, we shall find that the average yearly income of a working- class family comes to about £94, or a weekly earnings of about 36s. This figure is of necessity a speculative one, and is probably in excess of the actual average income of a working family. This, then, we may regard as the first halting-place in our inquiry. But in looking at the average money income of a wage-earning family, there are several further considerations which vitally affect the measurement of the pressure of poverty.