On the other hand, if we consider the example of Holland we may be assured that a further fall in the birth-rate among the poorer classes will be accompanied by an immediate and progressive improvement in their conditions, by a checking of the output of physical and mental defectives, and by a gain in the national efficiency, and probably also in the rate of increase of our population. As the Bishop of Ripon said at the Church Congress of 1910: “If the diminution of the birth-rate could be shown to prevail among the unfit, we might view the phenomenon without apprehension, and we might even welcome the fact as evidence of the existence of noble and self-denying ideals.” There is no reason why the death-rate in any part of our Empire should be higher than the 9 per thousand of New Zealand, where poverty as we know it scarcely exists. The birth-rate of Great Britain can therefore fall to 20 per thousand before our normal natural increase of 11 per thousand is reduced. As this paper is being concluded, the Registrar-General’s figures for 1913 have come to hand, and show that the fall of the birth-rate in the last three years has been accompanied by a recovery in the natural increase to 10.8 per thousand. DIAGRAMS OF INTERNATIONAL VITAL STATISTICS Prepared by Charles V. Drysdale, D.Sc., 1911 In the accompanying diagrams white strips imply birth-rates, shaded strips death-rates, and black strips infantile mortality, or deaths of children under one year. The amount of the white strip visible above the shaded strip is, of course, the excess of birth over death-rate, or the rate of natural increase of population. Fig. 1.—Shows the relation between birth and death-rates and infantile mortality in various countries in 1901–05. Fig. 2.—Relation between birth-rate and _corrected_ death-rates in various countries. (This shows that France is healthier than appears in Fig. 1.) Fig. 3.—Shows relation between birth and death-rates from various causes in five districts of London. Fig. 4.—Relation between the birth-rate and death-rate for various arrondissements of Paris in 1906. (Note that the increase in the Elysée quarter is as high as the average in the quarters of high birth-rate.) Figs. 5 and 6.—Variations of the total population of birth- and death-rates in the United Kingdom and the German Empire. (Note that the fall in the death-rate corresponds fairly closely to that in the birth-rate.) Fig. 7.—The same for France. (Note that the population is still increasing, although slowly.) Fig. 8.—Birth and death-rates for France since 1781. (Note that the rate of increase of population in 1781 was no higher with a birth-rate of 39 per 1,000 than in 1901–6 with a birth-rate of only 21 per 1,000. A fall of 17.8 per 1,000 in the birth-rate has resulted in a fall of 17.5 per 1,000 in the death-rate.)