The Runn of Cutch, as I have shown elsewhere,[3] is a low region near the delta of the Indus, equal in extent to about a quarter of Ireland, which is neither land nor sea, being dry during part of every year, and covered by salt water during the monsoons. Here and there its surface is incrusted over with a layer of salt caused by the evaporation of sea-water. A subsiding movement has been witnessed in this country during earthquakes, so that a great thickness of pure salt might result from a continuation of such sinking. TRIAS OF GERMANY. In Germany, as before hinted, chapter 21, the Trias first received its name as a Triple Group, consisting of two sandstones with an intermediate marine calcareous formation, which last is wanting in England. NOMENCLATURE OF TRIAS. German French English Keuper Marnes irisées Saliferous and gypseous shales and sandstone. Muschelkalk Muschelkalk, on calcaire coquillier Wanting in England. Bunter-sandstein Grès bigarré Sandtone and quartzose conglomerate. Keuper.—The first of these, or the Keuper, underlying the beds before described as Rhætic, attains in Würtemberg a thickness of about 1000 feet. It is divided by Alberti into sandstone, gypsum, and carbonaceous clay-slate.[4] Remains of reptiles called _Nothosaurus_ and _Phytosaurus,_ have been found in it with Labyrinthodon; the detached teeth, also, of placoid fish and of Rays, and of the genera _Saurichthys_ and _Gyrolepis_ (Figs. 387, 388). The plants of the Keuper are generically very analogous to those of the oolite and lias, consisting of ferns, equisetaceous plants, cycads, and conifers, with a few doubtful monocotyledons. A few species such as _Equisetites columnaris,_ are common to this group and the oolite.