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January 16, 1904


JAMA. 1904;XLII(3):178. doi:10.1001/jama.1904.02490480040010

The production of sex was recently discussed editorially1 and some recent studies of the subject noticed. Still another memoir bearing on the subject is that of Schuecking2 which, however, covers a wider biologic range of study and includes a consideration of the essentials of fertilization as they occur both in the lower organisms and in the human species. A certain portion of Schuecking's experiments on the artificial fertilization of certain marine organisms was noticed in a former issue3 of The Journal, but more recently he has published some interesting and perhaps important deductions. He finds that the taking up of water is a preliminary essential for both artificial fertilization and parthenogenesis and that fertilization is more certain the larger the number of spermatozoa. It is rather incomprehensible why so large a number should be required—some two or three hundred millions—when but a single one is sufficient for