Proceedings Am. Philos. Soc. Vol. LII. No. 209 



Plate VI 



A. Top of fluted hill at kilometer iSj'S. near Quixada, Ceara. Waring, 



pllnt., 1012. 



r.. The fluted and pitted granodiorite hill at Quixada, Ceara. Altitude 

 ahout 200 ms. Waring, phot., 19 12. 



