“ Horner, was read, giving an account of some granite veins in slate, in the Mourne mountains.
In some part of these mountains, which are situated at the southern extremity of the county of Down, grey granite forms the summit of the mountain, and primitive slate the sides. The contacts are as sharp as possible, without the least of one rock graduating into the other, and in all cases the granite is continued from the great mass in veins through the slate, but never the contrary. [1] Masses of slate often occur, like islands floating in, and surrounded by the granite of the veins. ”

“ A sketch of the Campsie strata is subjoined, as descriptive of the whole.
The coal has been extensively excavated for a long series of years, from mines of which the temperature is seldom under 60° Fahr. frequently as high as 80°, in places excluded from any direct current of air. The circulation of this warm air has ripened the hard slate into various qualities, and these contain proportions of alum and copperas, which vary according to the time of their exposure, the recent slates abounding in copperas, those longer exposed, in albuminous matter. ”

“ Member of the Geological Society, on some remarkable appearances in coak, was read.
The coak in question is produced from two varieties of Newcastle coal, known in the market by the name of Tanfield moor and Pontop. The coal is charred in an oven of brickwork, of very simple construction, each charge being sufficient to cover the floor to the thickness of 18 or 20 inches. The combustion begins at the surface and proceeds gradually downwards. When all the bituminous matter has been driven off ”