C. SKOTTSBERG 



Fig. 8. The escarpment between Vaqueria and Jiianango, Masatierra, showing the numerous 

 vertical dikes. — Photo C. Skottsberg ^s/g 1908. 



Fig. 9. Diagrammatic sketch of part of the escarpment between \'aqueria and Juanango; comp. 

 fig. 8. Dikes black; in nature they do not run quite so regularly. 



