SEWAGE CONTAMINATION OF OYSTER BEDS. 



203 



varying in depth from G to 20 feet at low tide. Below Conimicut 

 Point the river is fully 3 miles in width, and has free communieation 



PROVIDENCE RIVER 



AND 



NARRAGANSETT BAY 



SHOWING LOCATIONS 



with both the Eastern and A\'estern passages of the bay, insuring a 

 good circulation of water at all times; but above this point it is scarcely 



