PLATI5 LIII. 



Vig. 1. Blowout on the edf,'-e of the oak (^ucrciis vcliitina] near Beach, Illinois. Keveg-etation 

 by prairie, marsh, and thicket plants. September 11, 190t». 



rigj2. Marsh associations in the Dead River near Beach, Illinois. Yellow water-lily(iV)';«- 

 phaea advena) , arrowleaf (Sagittaria latifolia), cattail (Typlia latifolia). and reed {Phraemites 

 communis). August 13, 1910. " n . .r ./ ^ v .& 



