746 et seq.; Politisch-Anthropologische Revue, 1905, pp. 145 et seq.) The proportion of German youths fit for military service slowly decreases every year; in 1909 it was 53.6 per cent, in 1910 only 53 per cent; of those born in the country and engaged in agricultural or forest work 58.2 were found fit; of those born in the country and engaged in other industries, 55.1 per cent; of those born in towns, but engaged in agricultural or forest work, 56.2 per cent; of those born in towns and engaged in other industries 47.9 per cent. It is fairly clear that this deterioration under urban and industrial conditions cannot properly be termed a racial degeneration. It is, moreover, greatly improved even by a few months' training, and there is an immense difference between the undeveloped, feeble, half-starved recruit from the slums and the robust, broad-shouldered veteran when he leaves the army. The term "aggeneration"—not beyond criticism, though it is free from the objection to "regeneration"—was proposed by Prof. Christian von Ehrenfels ("Die Aufsteigende Entwicklung des Menschen," Politisch-Anthropologische Revue, April, 1903, p. 50).