Page:A Treatise on Geology, volume 1.djvu/274

 258 in a series of three terms, the upper one of which does not exist at all in the basin of Paris; while, on the other hand, the lower one, well developed near Paris, is only locally seen in the south.

The middle term of this series corresponds to the upper term of Paris: it expands greatly in Spain and Switzerland.

In Spain abundance of freshwater deposits occur; in Switzerland the sandy and conglomerate beds (molasse) expand into a vast thickness, include beds of limestone and layers of lignite yielding bones, and extend along the north front of the oolites of the Alps towards Vienna. Here in the basin of Lower Styria, Murchison and Sedgwick give us the following general section of the tertiary series.