park commissioners of such cities of the first and second classes,
as supplemental to other powers conferred by this act, shall have
the power, whenever in their discretion such course is advisable, to
appropriate property in the manner hereinafter provided for the purpose
of: (a) establishing a park, parkway, pleasure driveway or boulevard,
or (b) widening or extending any park, parkway, pleasure driveway or
boulevard, or (c) opening, widening, or extending any route or right
of way for a sewer or channel of any water course connected with or
necessary for the protection of any park, parkway, pleasure driveway or
boulevard, or (d) constructing any embankment or levee along such water
course for the protection of any such park, parkway, pleasure driveway
or boulevard, or (e) constructing any bridge or viaduct upon or
connected with any such park, parkway, pleasure driveway or boulevard,
or (f) converting any street or alley connecting any parks, parkways
and boulevards in any such city into a boulevard or pleasure driveway;
and also said board shall have power, in the same proceedings, to
provide for the construction of improvements of such property for a
park, parkway, pleasure driveway or boulevard, in case such property
is appropriated or to be appropriated for such purpose; or to provide
for the construction necessary for the widening or extending of the
same, in case such be the purpose for which the land is appropriated or
to be appropriated; or to provide for the construction necessary for
the opening, widening or extending of any such route or right of way
for a sewer or channel of any such water course, in case such property
is appropriated or to be appropriated for such purpose; or to provide
for the construction of any such embankment or levee along any such
water course as aforesaid, in case such property is appropriated or to
be appropriated for such purpose; or to provide for the construction
of any such bridge or viaduct, in case such be the purpose for which
such property is appropriated or to be appropriated; or to provide for
the converting of any such street or alley into a pleasure driveway
or boulevard, in case such be the purpose of the appropriation;
furthermore, such board may provide for the construction of any of
the foregoing work or improvements when the property or part thereof
necessary for the same has been secured by contract or otherwise as
hereinafter provided.