\ 
2 Led 
Woopworrn.— Geological Expedition to Brazil and Chile. 
’ 
° 
PLATE 27. 
“N ’ . ‘ y,*a1" < ‘. of. ; 
Glaciated pebbles from tillite beds -of P 
¢ 
¢ 
a = 
s* 
: it ae 
a oe 
; o * a hi iv o aee p! 4 ) 4 
sh Ca La? ee WN ti fi) = 
