^{page 161 1 note} It is interesting-, in connexion with these fine-grained ash-slates, to refer to the “altered ashes“ in the contact-zone of the Shap granite, as described by Harker and Marr. The intimate mixture of chlorite, mica, and quartz gives rise to the much larger mosaic of quartz and biotite. The quartz is converted into much larger individualized grains. The sericitic mica is absorbed into the biotite, as is so usually the case when sedimentary slates are altered by granite-contact. The finely-disseminated garnet (if originally present in the ashes at Shap) is apparently also re-absorbed during these processes, as I have sought for it in vain in many Shap sections.

In the mosaic of these Shap contact-rocks felspar is sometimes seen, sometimes not, which fact rather lends support to some of the inferences 1 have drawn as to the interpretation of the analytical results.

^{page 165 1 note} They are probably of later introduction than the Mammals with Oriental affinities.

^{page 166 1 note} In my last contribution to this question in the August Number of this Magazine, there is a mistake, that I must have overlooked in the proof, on p. 373. I wrote: “Surely to say that “a movement has been distributed over the Tertiary and post-Tertiary period and a great portion is of post-Pliocene date,” is not the same as to say that the whole movement, or even the greater part of the movement, is post-Pleistocene.” The last word has been by mistake printed post-Pliocene.