Geology and Mineralogy. AIT 
cases of a reversal of the previously known order of succession, 
and of wider stratigraphical range; as in the occurrence of the 
o 
cies. There is also a commingling of Upper Devonian species 
with the Lower Carboniferous fauna. 
An interesting discovery is that of Pulmoniferous mollusks of 
the genera Physa and Zaptychius in the Subcarboniferous. 
8. Occidental Alps.—M. Lory has given the results of 
his explorations in this region in the Bulletin of the Geological 
Society of France, ix, 652 (1881). He states that no brea 
exists between the crystalline schists, gneiss, mica schists, har 
blende schists, of the “terrain primitive” and the Silurian beds to 
q ndic schist, mi 
of cipolin and granular limestones, well stratified granitoid gneiss. 
In the first zone the coal formation is sometimes conformabl 
with the crystalline schists and sometimes not. he greatest 
displacements in the region occur between the Carboniferous 
ds and the Trias—or the Lias where the Trias is absent. The 
Protogine of Mont Blanc is in normal superposition over the mica 
schists, and its “en eventail” structure is not due to a central 
auticlinal fold, but simply to a synclinal fold of the upper series 
résivaudan, separates the first Alpine chain from the Subalpine, 
0 
meters.— Archives des Sci. Phys. et Nat., xiii, March 15, 1885. 
9 Communicagdes da Secgao dos Trabalhos Geologicos de 
