596 Scientific Intelligence. 
gin with the gneiss; at = same time, true massive, igneous 
granites are also to be fou 
That the stratification of the gneiss is of very ancient origin is 
clearly seen in the fact that bowlders of it, with the same struc- 
ares are om met tok in the conglomerates of the yes tcsr oe 
well as in the later formations. Further Se position of th 
th 
The course of events, according to M. Lory, was this: After 
the deposition of the Carboniferous, and before that of the —— 
horizontal planes. The visti strata, on the o and, were 
comparatively soft and pliable, and yielded ates rf the acting 
force, bending and folding ieecdng to the movements of the 
solid rock beneath, and mostly without fracture. Thus, while 
the crystalline rocks were broken and faulted on a grand scale, 
the more recent strata were — left — sometimes 
pressed in between the others so as to seem to be conformable, or 
shoved over and folded upon  slecedinaboei in the arn intricate 
manner. 
M. Lory describes the relations of — rocks of the Petite Gorge 
erland 
On the Italian side of the Alps, zones of the crystalline rocks are 
found which are still nearly horizontal, and which wee-snlpatee 
have suffered the same change of position as the secondary strata 
covered. At the 
Susa, or Mont Cenis, we find, as we _— —_ t, the same regu- 
Th of arch that exists in the Jura Moun 
_ The so-called fan-structure of Mont Blane pa the St. Gotthard 
. &. D. 
z ‘8. Bulletin oa? the United States Geological and Geographical 
: i. ey of the - Territories. Department of the Interior.—Bulletin 
