HUMAN artifacts can often be very useful to the geologist. When they occur in sufficient numbers and are characteristic, prehistorians can be definite in assigning the industries to a certain culture or cultures, and they can then be utilized by the geologist in the same way as are fossils. In Europe during a part of Quaternary times Lower Palaeolithic cultures flourished. Now Quaternary times in Europe can, of course, be readily subdivided into glacial and interglacial periods, but these naturally did not occur further south. In East Africa geological evidence has been adduced to show that intense pluvial periods took the place of our European glaciations, while during the interglacial phases the African areas suffered from arid conditions. Lower Palaeolithic industries are found at certain levels in East Africa and they enable the geologist to correlate the East African and European sequences. South-East India (Madras) is also not an area where glaciations ever occurred: but, we ask, can geological evidence be adduced to demonstrate climatic changes corresponding to those found to have occurred in East Africa ? Lower Palaeolithic industries occur in great numbers in South-East India; whereas most of them have been merely collected from the surface, and are therefore useless for the purposes of exact dating, a number of finds in situ in definite layers have been made, and as in East Africa these can be used as datum lines for correlating purposes.

HEAD-shield acutely triangular. Glabella elongated, subpentagonal, widest across middle, gently convex or subcarinate, without furrows or lobes, having anterior half freely projecting in front of cheeks and produced into a long slender straight horizontal spine grooved along its upper and lower surfaces, fully twice the length of the glabella. Axial furrows nearly straight, diverging anteriorly, with a small deep slit-like pit at their anterior end. Fixed cheeks smooth, broadly triangular, nearly equilateral, reaching half-way up the glabella, with posterior lateral angles slightly curved back. (Free cheeks unknown). Facial sutures slightly sigmoidal. Pleuro-occipital furrow straight, strong, marking off rather broad band-like occipital segment; meso-occipital furrow and segment scarcely defined, smooth, without median tubercle.

THE Carlingford-Barnave district falls within the boundaries of Sheet 71 of the Ordnance Survey of Ireland, and forms part of a broad promontory lying between Carlingford Lough on the north-east and Dundalk Bay on the south-west. The greater part of this promontory is made up of an igneous complex of Tertiary age which has invaded the Silurian slates and quartzites and the Carboniferous Limestone Series. This complex has not yet been investigated in detail, but for the purposes of the present paper certain references to it are necessary, and these are made below. The prevalence of hybrid-relations and contamination-effects between the basic and acid igneous rocks of the region is a very marked feature, and because of this it has been difficult at times to decide which types have been responsible for the various stages of the metamorphism.

FOR more than twenty-five years the compiler of this bibliography has been deeply interested in the tectonic history of the British Isles: for the greater part of this time he has also been struck by the absence of any adequate and annotated treatment of the subject, since the appearance of the third edition of Jukes-Browne's Building of the British Isles, 1911. (The so-called 4th edition of this work, dated 1922, appears to be merely an unrevised reprint of the 3rd edition.) In 1929 this want was in part supplied by the publication of The Physiographical Evolution of Britain, by Dr. L. J. Wills. Even in this admirable work, however, the stress is on physiography rather than on tectonics, and many of the more important writings on this side of the subject are not referred to. In the Handbook of the Geology of Great Britain, which appeared in the same year, the exiguous section on “Morphology” includes no bibliography, while the whole scheme of treatment is in the main palaeontological, and little help on the tectonic aspect is to be obtained from the text of most of the sections. The present publication may in a sense be regarded as a supplement to that work.