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The Elimination of Mental Defectives



IN the May issue of the Nineteenth Century Prof. Punnett describes in an interesting way the general scope of the recent advances in genetic research, a subject on which the public certainly need much instructing. He repeats certain figures, however, all doubtless perfectly correct, which were calculated for him by Prof. G. H. Hardy, and on this subject we should like to direct his, and his readers', attention to the comments thereon made by Mr. R. A. Fisher in vol. 16, page 114, of the Eugenics Review. If those criticisms are correct, and no arguments to the contrary have been forthcoming, the elimination of the feeble in mind by segregation might, at first at all events, be a far more rapid process than Prof. Punnett's figures would lead us to suppose.

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