Bui. 156, Bureau of Chemistry, U. S. Dept. of Agriculture, 



Plate IV. 



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Fig. 1,— View of Indian Creek, near Canarsie, Long Island, where Nine Oyster 

 Dealers Float Oysters in the Cellars of their Houses. 



Arrow points to Dealer A's housL', 



Fig. 2.— A Three-Compartment Privy Located Directly Over Indian Creek not 

 Far below Dealer A. 



This is one of the immediate and specific sources of pollution in this creek. 



