Section 477. Dutchess county

1.   All mentally ill, mentally retarded,
  blind and deaf and mute  persons,  the  expense  of  whose  support  and
  maintenance  now  is,  or,  under the laws of the state of New York, may
  become a charge  upon  the  city  of  Poughkeepsie,  or  the  county  of
  Dutchess,  exclusive  of  said city, or both, and who are maintained, or
  shall be maintained, in any of the institutions  of  the  state  of  New
  York, shall be supported by said county of Dutchess as one district.
    2.    All  institutions  in the state of New York maintaining any such
  person whose support  is  properly  chargeable,  or  shall  be  properly
  chargeable, to said city or county, are hereby required to render to the
  county  treasurer  of  said  county  all  bills  for the support of such
  persons without any distinction between those persons from the different
  parts of said county.
    3.  This section shall not be held to affect chapter two  hundred  and
  eighty-six  of  the laws of eighteen hundred and sixty-three, an act for
  the better support of the poor in the city of Poughkeepsie, except as to
  the class of persons herein named.