Skin Colour 163 wherever they find the existence - or the alleged existence - of these intermediates, there they raise their standard and issue their challenge. They have done so, for instance, with regard to the colour of the Shirley poppy petals, of the colour and markings of mice, of the grades of single combs in fowls, and of the grades of skin colour in crossed races of Mankind. It will be our pleasant duty from time to time to comment upon their efforts in the pages of this Journal. And we proceed to do so at once by dealing with their recent publications on the two latter subjects, in the notes which follow. [double hairline centered score] (2) Skin Colour in Human Hybrids. A Mendelian Reply, including a New Mendelian Hypothesis. In a recent number* of "Biometrika," Professor Karl Pearson has a "Note on the Skin Colour of the Crosses between Negro and White." Those of us who are familiar with the published works of Professor Pearson will be impressed by the significant absence of that militant note which characterised his earlier attacks upon Mendelism. We no longer read the uncompromising assurance "that nothing corresponding to Mendel's principles appears in these characters for Man."[dagger] In its place we are glad to note a chastened tone, and we are informed, not that the evidence which he has adduced in this note is destructive of Mendelism, but simply that "In view of the opinions which I have cited above, I think the suggestion that skin colour 'Mendelises' should not be vaguely made until some very definite evidence in its favour is forthcoming." And, so much has the uncompromising attitude been modified, that Professor Pearson further thinks it conceivable that such qualities as the negroid lip, the crimped hair, the characteristic [italics]aloe nasi[end italics], and the peculiar negro temper, would fit the Mendelian theory closer than skin colour.[double dagger] And he thinks [hairline rule] [footnotes]* Part IV., Vol VI., March, 1909. [dagger] "Biometrika," Vol. II., pp. 214 and 215. [double dagger][italics]Ibid,[end italics] Part IV., Vol. VI., p. 352. [end]