The Interstate Sanitation Conunission (1970) reported an increase 

 in coliform density between LIS surveys made in 1959 and 1970 (Fig. 25). 

 Yearly data from the New York City Harbor Pollution Survey (1956-70) 

 show na clear-cut rise in coliform density at Hart Island or Stepping 

 Stones during this period, though an increase in BOD is apparent 

 (Tables 66-67). 



Also not covered by our study was a bird population census. 

 Schierbaum, et al. (1959) mentions LIS as a wintering ground for many 

 Atlantic Flyway marsh ducks, and a resting area for others. Bird counts 

 for western LIS (1948-1970) from the New York Department of Environmental 

 Conservation should reach this office by Nov. 22 and will be forwarded 

 upon request. 



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