there is none in Provence. The fierce sun forbids it. Consequently the rock is naked and cadaverously white, but scantily sprinkled over with stunted pines.
The Jura limestone is the great pièce de resistance in Provence: it is sweeter in colour than the chalk, ranging from cream white to buff and salmon; it has not the dead pallor of the chalk. Any one who has gone down the Cañon of the Tarn knows what exquisite gradations and harmonies of tone are to be found in Jura limestone. Here this formation stands up as a wall to the North, a mighty screen, sheltering the Riviera from the boreal winds. It rises precipitously to a plateau that is bald and desolate, but which is rent by ravines of great majesty and beauty, through which rush the waters from the snowy Alps. The chalk and the limestone are fissured, and allow the water flowing over their surface to filter down and issue forth in the valleys, rendering these fertile and green, whereas the plateaux are bare. The plateaux rise to the height of 3,000 or 4,500 feet.
The tract between the mountain wall of limestone and the sea is made up of a molass of rolled fragments of the rock in a paste of mud. This forms hills of considerable height, and this also is sawn through here and there by rills, or washed out by rivers.
Altogether different in character is the mass of the Montagnes des Maures, which is an uplifted body of granite and schist.
Altogether different again is the Estérel, a protruded region of red porphyry.
About these protruded masses may be seen the new red sandstone.
When we have mastered this—and it is simple enough
