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      Here, indeed, we have a counterbalancing influence, for, in the large families of the feeble-minded, there is a correspondingly large infantile mortality. A considerable proportion of Tredgold's group of children were born dead, and a very large number died early. Eichholz, again, found that, in one group of defective families, about sixty per cent of the children died young. That is probably an unusually high proportion, and in Eichholz's cases it seems to have been associated with very unusually large families, but the infant mortality is always very high.

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