IN a previous paper I have described the igneous rocks of that part of Kintyre contained in Sheet 12 of the 1 in. maps of the Geological Survey of Scotland. The present work deals chiefly with the minor intrusions of the greater part of Kintyre N. of Sheet 12, and contained in Sheets 20, 21, 28, and 29.2

WHILE recently investigating the contact metamorphism of the scattered Carboniferous liestone outcrops in the neighbourhood of Carlingford and Barnavave, Co. Louth, some striking rocks containing large crystals of mica and calcite, and small crystals of pyroxene and spinel were found by the writer at the south-east end of Barnavave Mountain. During the microscopic examination of this material the minerals in question were detected, and it is the purpose of this note to place this interesting occurrence on record.

THE published amount of precise geological information concerning the relatively recent volcanic islands in the southern part of the Red Sea is remarkably small, being restricted, to the writer’s knowledge, to a single paper on Perim Island (1); even in this case the visit and the collection of specimens were made by one who was apparently not a geologist.

IT is noteworthy that some analcite-bearing diabase has already been collected by Mr. Y. Deguchi from the Pescadoles Islands and the distribution of the same kind of rock was also noticed by Dr. B. Kotō in the Taihoku district many years ago. Little is known of the occurrence of alkaline rocks in Formosa, for the investigation of these rocks has not been carried out by any geologist. When the writer moved to Formosa, his attention was especially attracted to these rocks, both petrologically and geologically. The work was begun three years ago when he first found very interesting specimens of analcite-bearing rocks at Rokkutsu and published some brief notes thereupon. The present paper embodies further study of analcite-bearing rocks from Rokkutsu.

THE most generally accepted explanation of the formation of mountains has been that of a slowly contracting earth with a solid crust accommodating itself to a shrinking interior. As the assumed shrinking proceeds, so the crust has to fold and fracture in order to occupy a smaller area. Such movements, particularly folding, would be facilitated by the hot glassy substratum on which the crust is believed to rest. Now it might be supposed on general grounds that wherever the crust was at all uniform in texture some regular pattern of folds or fractures would be formed. Since the floors of the oceans, particularly the Pacific, are believed to be fairly uniform, and to consist largely of basaltic material, these should show the pattern well; but the continents in spite of their more varied constitution should also show something of a regular pattern. Therefore if one could ascertain what would be the pattern of a contracting sphere, then this should be tracable in the tectonic structures of the earth’s crust, and if the thermal contraction hypothesis is the real cause of these structures, in this way it should be possible to apply a crucial test to the validity of the hypothesis.

IN the Geological Survey Memoir on Ardnamurchan, North-West Mull and Coll, it was stated that the Lundy Island granite is very similar to the granites of Mourne Mountains and Arran, and is probably of Tertiary age. As this suggestion seemed to be contrary to the opinion of geologists familiar with the West of England, who generally consider the Lundy Island granite to be of the same age as the granites of Devon and Cornwall, it was thought desirable to settle the question, if possible.

THE publication by Mr. S. R. Nockolds (8) of a description of an orbicular diorite from Alderney prompts the writer to publish forthwith an account of a similar rock from that island, which he has examined.

I HAVE read Dr. Sandford’s important note on “Some Recent Contributions to the Pleistocene Succession in England” (Geol. Mag., LXIX, NO. 811, January, 1932), with much pleasure and profit. So long ago as 1920 I published in the Geological Magazine (“The Geological Age of the earliest Palaeolithic Flint Implements”, LVII, No. 671, May, 1920) a communication in which I expressed the then unorthodox belief that the palaeolithic implements of England were not—as was at the time generally supposed—of post-glacial age, but were made by races of people living in warm epochs intervening between the various glacial periods. In this note I also, for the first time, made a tentative correlation of the East Anglian glacial deposits with those studied by Penck and Brückner in the Alps, and it is of much interest to me to notice how my initial work has been extended by others, among whom Dr. Sandford takes a foremost place. It is also gratifying, human nature being what it is, to find that so much of my original correlation has stood the test of time, and that my claim that the Upper Chalky Boulder Clay is of Riss age, which received much condemnation, now finds itself supported by the powerful advocacy of my friend the Abbé Breuil.