﻿84 Reviews — Heer^s Primceval World of Switzerland. 



Palseozoie slates. A fine series of fish remains from these beds may 

 be seen in the Geological Collection of the British Museum. 



No fewer than fifty-three species of fish have been identified and 

 described, together with two Sea- turtles and two Birds. We subjoin 

 a figure of one of the turtles. 



Fig. 4. 



Fig. 5. 



Fig. 4. Chelane ovata, Heer, from Matt, one-tliird nat. size. (Fig. 141 , p. 248, Heer.) 

 Fig. 0. Chelone imbricata, living Hawk's-bill Turtle. (Fig. 142, p. 248, Heer.) 



The birds (Protornis Bhimeri, Heer, and P. glaronensis, Meyer) 

 were about the size of Larks, and appear to have belonged to the 

 family of Finches. 



The Glaris slate-rock is the oldest of these Swiss Tertiary deposits, 

 and, like the beds of Monte Bolca, is of Middle Eocene age. Above 

 it is the Nummulitic formation of Ealligstocke, and the newest, the 

 shales of Mauremont, Soleure, and Obergosgen, containing remains 

 of no fewer than twenty-five genera of terrestrial Mammalia, together 

 with twelve Eeptilia represented by Chelonige, Ophidia, and Crocodilia. 



Nearly one-fifth of the area of Switzerland (about 152 square 

 geographical miles), comprising the lowland, undulating country 

 between the Jura and the Alps, is covered by masses of marls and 

 sandstones, which have received the general name of " Molasse," 

 and include all the formations of Middle Tertiary or Miocene age in 

 this area. These deposits are of great thickness, and rise on the 

 borders of the Alps into considerable mountains, such as the Speer 

 (6021 feet) and the Eighi (5541 feet). To the south the 'Molasse' 

 is stopped by the zone of ' Flysch ' and the Nummulitic deposits ; it 

 touches the Cretaceous rocks only in a few localities. To the north 



