PrAtE. Soviie 
Fig. 1. Station XVIII. Photograph taken September 5, 1908. A comparison of this figure with 
the previous plate will illustrate the difference in rainfall in 1908 and 1909. When the photograph was 
taken the bottom of the pond was dry and sun-baked. (Woodruff.) 
Fig. 2. East Branch of the Chicago River, looking south from Glencoe road. Photograph taken 
May 18, 1908. Note the width of the river. (Woodruff.) 
