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The Ohio Journal of Science [Vol. XVI, No. 4, 



toward the inner end are mucky. Water lillies are abundant 

 here. The western shore is thickly covered with reeds, at 

 places there are marsh conditions and nearly everywhere there 

 is a deposit of dead vegetation. Where this vegetation is 

 absent a sandy or pebbly bottom is exposed. The bottom 

 along three-fourths of the eastern shore for a distance of fifteen 



Figure 1. Large nest completely exposed. Some water still covers bottom 

 of nest. Darker spot in center of this marks area within which eggs lie. 



to twenty-feet out from the shore line is sandy and pebbly and 

 is sparsely covered with vegetation. The difference between 

 the eastern and the western shore is due partly to the influence 

 of winds and currents which tend to pile up debris on the 

 western side. 



The observations on the nests were made at intervals of 

 about a week between July 5 and July 27, 1915. Within this 

 period the total number of nests coimted was 410. These 



