340 Professor Sedgwick and Mr. Murchison on the 



ferriferous beds, as it would interrupt the order of our narrative ; and we now 

 proceed to enumerate, in the ascending- order, the successive groups from 

 Siegsdorf to Traunstein, commencing with the beds laid bare on the right 

 bank of the Traun in the Hochberg and the Tolberg-. 



1 . Sandy conglomerate, with small pebbles, both of the primary and secondary rocks of the Alps *. 



2. Sandy, bluish marls and marlstone bands, occasionally with fragments of plants. 



3. Conglomerate of small, rounded pebbles alternating with micaceous, yellowish sandstone. 



4. Micaceous sandstone of a greenish hue. 



5. Dark coloured marls, with bands of marlstone, and thin, irregular seams of black lignite, 



6. Pebble beds with sand, and sandy marlstone. 



7. Grey and blue marls. 



The lowest beds near Siegsdorf are inclined, to the north, at an angle of 

 about 50°; but as we advance on the line of dip, from the Alps towards the low 

 country, the angle diminishes gradually, so that the strata, last enumerated, dip 

 N. at an angle of not more than 40°. We may however observe, that the strike 

 of all this series is perfectly parallel to that of the underlying nummulitic 

 systems of Arzt and Kressenberg. 



8. Pebbly conglomerate like the preceding, and of a considerable thickness. 



9. Finely laminated, micaceous, sandy, blue marls, separated by bands of marlstone and mo^a«*e. 



About three-quarters of a mile above the town of Traunstein, the left bank 

 of the river offers a more decided escarpment than the right ; and immediately 

 below the village of Haslach the preceding group is seen in a cliff for several 

 hundred yards ; and as it contains no beds, like the conglomerates, produced by 

 any violent mechanical action, we found in it, as we expected, some well pre- 

 served though extremely fragile fossils. They have been examined by Mr. J. 

 Sowerby, who has had the kindness to return us the following list. 



Cerithium (or Potamides), resembling Cfunatum. Min. Con. Tab. 128, 

 London clay. 



Cerithium, species uncertain. 



Melanopsis incerta. Hist. Nat. Gen. et Particul. des MoUus. Sestos. 



Ampuliaria or Natica, two species, one of which is found at Marzoll. 



Corbula revoluta. Min. Con. Tab. 209, 



Pisum. Ibd. .i^. 



Crassatella .? Area. Cyclas, Mitra ? Nassa, Turbo ? Turritella, &c.^ 

 all probably of new species. 



), fig. 8— IS'I . , , 

 ® > London clay, 



fiff. 4. J ^ 



* Some of the harder varieties of these conglomerates might easily be mistaken for transition 

 rocks, if we judged only by mineral characters. Dr. Buckland found a similar conglomerate, north 

 of Teisendorf, containing sharks' teeth. 



