WooDwoRTH. — Geological Expedition to Brazil and Chile. 



PLATE 23. 



Spheroidal separation in tillite near Rio Negro, Santa Catharina, 

 south of the river of the same name. 



View taken September 20, 1908, of a roadside cut, looking northwest, 

 about half an hour's ride from Rio Negro on the road to Sao Bento, on the 

 south side of the Rio Negro. This bed overlies the shales shown in Plate 24. 

 See small map page 68. 



