20 
SCENERY OF SWITZERLAND. 
The folds of the eastern Jura are the most in- 
tense, while those of the west again surpass those of 
the centre. In all cases the amount of compression 
is approximately the same — about 5000 metres, the 
folds increasing in intensity as they diminish in 
number. 
CL da Montcrri „ CL da Clos dtt Boulis SCBrais 
ouduLomoat EpsiuTilliers 
Selente « 
Fia, — Section across the Clos du Doubs. 
This subdivision and reunion of folds which is so 
clearly visible in the Jura, is frequent also in the Alps, 
and indeed in folded chains generally. 
A glance at any map will show that the Jura is a 
succession of hills and valleys, running approximately 
V. de Delemont Ch. de.Vellcrat M. da V. de 
le Moat Moutier Koutier 
Fig. 75. — Section rom the Valley of Delemont to that of Moutier. 
S.W. and N.E. These ridges and depressions are 
mainly due to compression, and to the consequent 
undulations of the strata, as shown by Fig. 74, giving 
a section from NW. to SE. a little south of Porrentruy, 
near the remarkable turn of the River Doubs and 
