Section 18-112. Restrictions on Eastern parkway, etc

a. It shall be unlawful
  for  buildings  or  other  erections,  except  porches, piazzas, fences,
  fountains and statuary to remain or at any time to be placed upon any of
  the lots fronting upon Eastern parkway, from Washington avenue  easterly
  to  the  extension  of Eastern parkway, or upon the extension of Eastern
  parkway to Bushwick avenue, within thirty feet from the line or sides of
  such streets respectively.
    b. The intervening spaces of land on each side of Eastern parkway  and
  the  Eastern  parkway  extension shall be used only for court-yards, and
  may be planted with trees and shrubbery, and may be otherwise ornamented
  at the discretion of the respective owners or occupants thereof.
    c. Any building standing  on  April  twenty-fourth,  nineteen  hundred
  three,  or  that  may have been or may be erected thereafter, on any lot
  fronting or to front on either Union street or Lincoln  place,  easterly
  from New York avenue to the former city line of Brooklyn, shall never be
  used  for  any  purpose  other  than a dwelling house, church, chapel or
  school house, stable, carriage house, conservatory for plants or a green
  house; but no livery or railway stable or carhouse shall at any time  be
  erected or maintained upon any of such lots.
    d. It shall be unlawful to erect, establish or carry on, in any manner
  whatever, upon any lot fronting upon Eastern parkway or its extension to
  Bushwick  avenue,  or  upon  any  lot  bounded by either Union street or
  Lincoln place, easterly from New York avenue to the former city line  of
  Brooklyn,  or  upon the streets intersecting Eastern parkway between St.
  Johns Place and President street, any slaughter-house, tallow chandlery,
  furnace, foundry, nail or other factory, or any manufactory  for  making
  starch,  glue,  varnish,  vitriol, oil or gas, or for tanning, dressing,
  repairing or keeping skins, hides or leather, or any distillery, brewery
  or sugar bakery, lime kiln, railway or other stable, or  depot,  or  any
  other  manufactory,  trade, business or calling, which may be in anywise
  dangerous, obnoxious or offensive to the neighboring inhabitants.