This peculiar Breccia is well displayed in the Clent Hills, between Hagley and Halesowen. It there reposes upon the Lower Permian Sandstones with calcareous grit bands--(which may be seen above the little Church of St. Kenelm)--and forms all the highest points of the Clent Hills, passing unconformably to the southward under the pebble beds of the New Red Sandstone. In this locality the angular fragments composing the Breccia are mainly volcanic:--rhyolites, porphyrites, ashes, and volcanic grits, embedded in a coarse matrix formed of similar materials. Other sections are seen in the Bromsgrove Lickey Hills, and in the neighbourhood of Northfield. In the last-named locality an excellent section is exposed in a lane leading from the Bell Inn to Bangham Pit. In this exposure the breccia, which shows the usual preponderance of volcanic materials, contains in addition fragments of Silurian limestone (crowded with characteristic fossils), and pieces of Landovery grit and shale. According to Sir Andrew Ramsay,[60] this Permian breccia is probably of glacial origin, its materials having been brought down by ice in Permian times from the neighbourhood of the Longmynd in central Shropshire, where all the formations represented in its derived rock fragments occur at present in natural juxtaposition. According to Professor Jukes,[61] the fragments of the Northfield breccia, at any rate, “may have been derived from adjacent rocks, now concealed under the Permian and New Red Sandstone.” The Triassic Rocks. BY W. JEROME HARRISON, F.G.S. A considerable portion of the Midland Counties of England is composed of red sandstones and marls. The town of Birmingham stands upon, and is surrounded by rocks of this character. They form the Triassic System of geologists, the first of the four grand members of the Mesozoic series. Strictly speaking, the title _Trias_ is a misnomer as applied to the English development of the rocks of this system. The central member of the typical German succession, the _Muschelkalk_, is wanting in Britain; and only the upper and lower divisions, the so-called Keuper and Bunter, are represented. The _Bunter_ or lower Trias, consists in the Midland areas of a mass of pebble beds or conglomerate, usually underlain and overlain by variegated sandstones. The _Keuper_ is formed of a great thickness of red marly strata, with a thick sandstone (_Waterstones_) at the base. The following table shews the subdivisions of the Trias which have been recognised in England, together with (_a_) their maximum thickness, and (_b_) their thickness in the neighbourhood of Birmingham. CLASSIFICATION OF THE TRIASSIC STRATA--