U. S. B. F.— Doc. 923. 



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Fig. 7. — The same cove as in figure 6 showing emergent vegetation, etc., at mouth of a rivulet (D 4), 



.July 9. 



Fig. 8.— The head of Brooklyn Industrial cove after clearing out driftwood and brush and opening 

 of passages through the vegetation. Taken a little to the left of figure 7 with the camera 

 farther from the water. 



