BULL. GEOL. SOC. AM. 



VOL. 19, 1907, PL. 16 



Figure 1. — Loess Ridge at HambueGj Iowa 

 Capped by mound containing pebbles and mussel shells 



Figure 2. — Bluff near I'ries Lake 

 The uppermost, nearly vertical part only is loess, resting- on Kansan drift 



LOESS RIDGE AT HAMBURG, IOWA, AND BLUFF ABOVE FLORENCE, NEBRASKA 



