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 to weaken, and frequently to destroy altogether, the powers of generation.

But poverty, though it does not prevent the generation, is extremely unfavorable to the rearing of children. The tender plant is produced, but in so cold a soil, and so severe a climate, soon withers and dies. It is not uncommon, I have been frequently told, in the Highlands of Scotland for a mother who has borne twenty children not to have two alive. Several officers of great experience have assured me that, so far from recruiting their regiment, they have never been able to supply it with drums and fifes from all the soldiers' children that were born in it. A greater number of fine children, however, is seldom seen anywhere than about a barrack of soldiers. Very few of them, it seems, arrive at the age of thirteen or fourteen. In some places one-half the children born die before they are four years of age; in many places before they are seven; and in almost all places before they are nine or ten. This great mortality, however, will everywhere be found chiefly among the children of the common people, who cannot afford to tend them with the same care as those of better station. Though their marriages are generally more fruitful than those of people of fashion, a smaller proportion of their children arrive at maturity. In foundling hospitals, and among the children brought up by parish charities, the mortality is still greater than among those of the common people.

Every species of animals naturally multiplies in proportion to the means of their subsistence, and no species can ever multiply beyond it. But in civilized society it is only