Figure (i. Bluffs aloiiK tlic Mississijjpi River, showing tlie liills spar.st'ly covered with 

 timlx'r above and tlie d(>ns(>ly wooded slopes below; these trees are mostly Acer 

 nigrum, Quercus rubra, Ulnivx/nlva. PhotographtHi by C. M. King. 



