Note 163 — APPENDIX II. On Characters as Adaptive and Specific.

The passage to which these remarks apply is likewise quoted, in the same connexion as above, in my paper on Physiological Selection. In criticising that paper in Nature (vol. xxxix. p. 127), Mr. Thiselton Dyer says of my interpretation of this passage, "the obvious drift of this does not relate to specific differences, but to those which are characteristic of family." But in making this remark Mr. Dyer could not have read the passage with sufficient care to note the points which I have now explained.