DOMAIN VII. COMPOSITE. 



it an angle of 80 degrees inclining towards the 

 west, and running from north to south. 



<c There I found a vein of granite 21 inches 

 in breadth, and uncovered for a length of about 

 18 feet. This vein, of which the sides are pa- 

 rallel, traverses the layers of schistose rock, un- 

 der an angle of 30 degrees, and forms with the 

 horizon an angle of 50 degrees, with the same 

 inclination as the layers. The granite which 

 forms this vein has shrunk, like that of Valor- 

 sine, with some rectilinear fissures, which cross 

 each other irregularly. There are seen in the 

 same rock other, veins of granite, of a less con- 

 siderable size, the largest being parallel to that 

 which I have described, while the others run in 

 an oblique direction. 



"I observed similar veins in the schistose 

 rock, at the foot of the wall of the city, and 

 under the path which accompanies that wall. 

 One of them, about fourteen inches in breadth, 

 is perpendicular to the horizon, like the layers 

 of the rock. It passes under the wall, and must 

 enter into the city. Near the Saone, and within 

 the city, is a quarry of granite, which was 

 wrought at the time I made my observations. 



" In fine, I made at Semur, in Auxois, an ob~ 

 servation analogous to the preceding, and which 



