98 



C. SKOTTSBERG 



Fig. 5. \aqueria valley, Masatierra, showing bed of doleritic basalt, — After a photograph 



bought in Valparaiso. 



F'ig. 6. Spheroidal weathering of basalt, Valle Colonial, Cu.nbLiicUid Day, — Photo C. Skotts- 



berg 24 191 7. 



