136 
THE GROWTH OF CONTINENTS. 
Figure 2 represents 
the Jura at the pres- 
ent time, when the 
latter upheavals have 
lifted the Jurassic 
strata to a sharper 
inclination with the 
Cretaceous deposits, now raised and forming the 
lower slope of the mountain, at the base of which 
is the Lake of Neufchatel, marked L in the dia- 
gram. 
Although this change of inclination is hardly 
perceptible, as one looks up against the face of 
the Jura range, there is a transverse cut across 
it which seems intended to give us a diagram of 
its internal structure. Behind the city of Neuf- 
chatel rises the mountain of Chaumont, so called 
from its bald head, for neither tree nor shrub 
grows on its summit. Straight through this 
mountain, from its northern to its southern side, 
there is a natural road, formed by a split in the 
mountain from top to bottom. In this transverse 
cat, which forms one of the most romantic and 
picturesque gorges leading into the heart of the 
J ura range, you get a profile view of the change 
in the inclination of the strata, and can easily 
distinguish the point of juncture between the two 
sets of deposits. But even after this dislocation 
of strata had been perceived, it was not known 
that it indicated the commencement of a new 
