As reported in the Geological Magazine, Vol. LX, 1923, p. 432, fossiliferous Carboniferous rocks were discovered by Messrs. C. Barrington Brown and R. A. Baldry in the Amotape Mountains of North-Western Peru, and their collection (comprising Cephalopoda, Lamellibranchia, Gasteropoda, Brachiopoda, Polyzoa, Crinoidea, etc.) presented to the Sedgwick Museum, Cambridge. This was augmented in 1924 by the presentation of a further collection made during a new visit to the area. In addition to the kindness of the two field investigators in allowing this fauna to he examined by the author, the latter wishes to acknowledge his indebtedness to Mr. C. Barrington Brown for drawing most of the figures.

The object of this paper is to give a connected account of the small plutonic masses which pierce the Lower Palaeozoic strata of South-East Scotland. These intrusions have been overshadowed by their larger neighbours the Galloway Granites, of which Teall has given such admirable descriptions, but are worthy of more attention than they have received in the past.

The hill of Pen-Cerig-calch, reaching to a height of 2,300 feet, on the southern borders of the Black Mountains, lies about 2 miles north of Crickhowell, and about 4 miles from the nearest part of the main Carboniferous outcrop above Llangattwg. It first attracted the attention of Murchison. Since his time, apart from incidental references, it has not been examined in detail, and as it lies just outside the borders of the Geological Survey Sheet 232, it is not included in the description of the succession of that area given by the Survey officers. The recent revision of this memoir, which includes a discussion of the zonal sequence of the Carboniferous along the main outcrop, is completed, structurally, by the following description of the sequence at Pen-Cerig-caich.

In connexion with the recent excavations in Kent's Carven, the following particulars relative to the discovery of the first organic remains by Mr. Thomas Northmore, F.S.A., of Cleve, near Exeter, in September, 1824, will prove of interest to many readers. They are given in a letter written by Mr. Northmore to the Editor of The Panorama of Torquay, 1832—Mr. Octavian Blewitt.

The island of Dominica is situated in lat. 15° 20′ N., and long. 62° 30′ W., and lies almost midway between the French islands of Guadeloupe (on the north) and Martinique (on the south). In the northern channel the Antillean plateau is submerged to a depth of about 2,100 feet, but in the southern a deep embayment entering from the west reaches a maximum depth of 6,600 feet. Some miles to the south-east of Dominica, however, the sea floor rises to within 270 feet of the surface, while the Madiana banks, east of Martinique and north of Barbados, are submerged only to about the dame depth. Lying as they do between the sedimentary parts of Antigua, Guadeloupe, and Barbados it would be interesting to ascertain, if possible, by boring, whether these banks are of a sedimentary nature in contrast to the volcanic nature of the main range of islands. On both the windward and leeward sides Dominica rises precipitously out of the sea, but this is more accnetuated on the leeward side where within six or seven miles of the shore the sea bottom reaches a depth of over a thousand fathoms. The preciepitous nature of the sea floor and the absence, of any sort of harbour at Roseau—the capital—render anchorage even at favourable times a very precarious matter, and one of great difficulty and danger in rough weather.