Page:Popular Science Monthly Volume 68.djvu/97

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amassed the great fortune with which he founded the prizes that bear his name.

the New Haven meeting of the National Academy of Sciences, held in November, Professor Edmund B. Wilson presented the results of observations that constitute an important step towards the solution of the long standing problem of the determination of sex. These observations demonstrate that in several genera of insects, belonging to the Hemiptera, sex is predetermined at least as early as the fertilized egg, and