BULL. GEOL. SOC. AM. 



VOL. 8, 1896. PL. 17 



Figure i.- Etched conglomerate Pebbles from Clifty Creek, White Co., Tennessee 



(natural size) 



Figure 2.— Etched Geodes from Spurrier, Tennessee 

 (about % natural size) 



ETCHED PEBBLES AND GEODES 



