Plate X 



Fig. 16. Evaporation rates in an embryonic ravine (1), in a portion of ravine 

 with lateral cutting- delayed (2). and at the bottom of the most mesophy tic portion 

 of ravine (3). stations 1, 2, and 3. 



Fier. 17. Evaporation rates at the font (3), middle (4), and top (?) of the north- 

 west-facing slope of the most mesophytic portion of the ravine. Stations 3, 4, and 5. 



