Figs. [21]–[24].—The only four countries with rising birth-rates. The death rate and infantile mortality have increased in every one.
Fig. [25].—Australia. The death-rate has fallen with the birth rate, and is now only about 10 per 1,000.
Fig. [26].—New Zealand. The only country in which the fall in the birth-rate has not produced a fall in the death-rate, and which is not therefore over populated. The infantile mortality is the lowest in the world, and the death-rate less than 10 per 1,000, which gives us an ideal which we can reach in all countries by lowering the birth-rate sufficiently.
Fig. [27].—The City of Toronto. The birth-rate has fallen and afterwards risen. The death-rate has fallen with the birth-rate, and afterwards risen, indicating that the improvements in sanitation have not been the cause of the falling death rate in other countries.
Fig. [28].—Berlin. The birth-rate rose rapidly from 1841 to 1876, and afterwards fell even more rapidly. The death-rate, except for epidemics and wars, rose and fell in almost precise correspondence with the birth-rate.
Fig. [29].—Berlin. The dotted area shows the fertility rate or births per 1,000 married women, and indicates the remarkably rapid fall since 1876. The correspondence of the infantile mortality with the birth-rate shown in Fig. [28] is very close.
Figs. [30] and [31].—Europe and Western Europe. These show that the total population of Europe is increasing faster the more the birth-rate falls, while in Western Europe the birth and death-rates correspond almost exactly. Calculations made from this show that about 25,000,000 fewer births and deaths have occurred in Europe since 1876, due to the fall in the birth-rate caused by the Knowlton Trial and the Neo-Malthusian movement. It should be noted that in the great majority of cases the decline of the birth-rate commenced in 1877, the year of the Knowlton Trial.
CHARLES V. DRYSDALE, D.Sc.
1911.