388 Professor Sedgwick and Mr, Murchison on the 



of which, after a careful examination, Mr. J. Sowerby has pronounced to be 

 very nearly, if not quite, identical with species found in calcaire grossier. 

 The list is as follows : — 



Lutraria convexa, Sowerby. Plate xxxix. fig. 1. 



Ldicina mutahilis ? Calc. gross. Deshayes. Coq. Fos. cles Env. de Paris. 

 Tab. xiv. fig. 6 and 7. 



Liicina renulala. Calc. gross. Deshayes. Cog. Fos. des Env. de Paris. 

 Tab. XV. fig. 3 and 4. 



Pecten (fragments of). 



Venus vetula. Basterot. Mem. Geol. Env. de Bordeaux. PI. vi. fig. 7. 



Cardium (fragments of). 



Cerithinm tiara. Calc. gross. Lamarck A7in. du Mas. Tome 3, p. 343. 



scalaria ? 



Nerita. 



Bulla elliptica. Calc. gross., London clay, Hordvvell Cliff. Min. Con. 

 Tab. cccclxiv. fig. 6. 



This shelly, blue marl, though of a thickness very inferior to that of many 

 of the groups we are about to describe, is highly important from its organic 

 remains, which are rare in most of the neighbouring strata. 



3. Alternations of sand, marl, and sandstone, with subordinate masses of shingle, here and 

 there, cemented into a millstone conglomerate. 



This group is largely developed, occupying the wine-hills of Sausal, and 

 all the broken district extending from thence eastward to the valley of the 

 Mur. It is traversed from W. to E. by the river Sulm, exposing on its banks 

 the old schistose rocks, with cappings, several hundred feet thick, of yellow 

 sands, marls, and conglomerates. 



Shelly beds occur, here and there, in this group, of which we remarked a 

 good example at the mouth of the gorge, where the Sulm issues into the 

 broad valley of the Mur near Leibnitz. The inclined chloritic and micaceous 

 schists there rise to the height of about GO feet above the bed of the Sulm, 

 and are then covered with the following horizontal beds. 



a. Breccia of angular fragments of the inferior rocks, cemented, apparently upon the spot, by 

 yellow calcareous matter. 



b. Indurated, sandy, concretionary masses, occupying a thickness of about 30 feet, chiefly 

 distinguished by specimens of a very large Ostrea. 



c. Arenaceous and calcareous marls of great thickness, but much concealed by vineyards and 

 vegetable soil. 



Near Ehrenhausen the group contains thick, subordinate masses of con- 

 glomerate, which, in a valley to the W.S.W. of the town, is quarried for mill- 



