336  SELLING  LATIN  AMERICA

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are  very  effective  in  bringing  to  their  attention ­
  articles  which  they  may  desire.
Sign  boards  are  beginning  to  be  well
thought  of  and  are  making  their  appearance
throughout  the  larger  cities.  Posters,  well
executed,  but  in  glaring  colors,  and  if  possible
displaying  a  portion  of  a  nude  female  always
attract  universal  attention  and  for  many  lines
are  excellent  mediums.  Some  of  the  countries ­
  charge  an  internal  revenue  tax  on  all  sign
boards,  posters,  placards  and  street  announcements ­
  proportionate  to  their  size.  Before  undertaking ­
  a  campaign  requiring  the  use  of  this
class  of  material,  it  is  therefore  well  to  ascertain ­
  what  this  fee  will  amount  to  and  arrange
for  its  payment.  In  some  cities  the  hoardings
are  sold  for  a  period  of  years,  to  the  highest
bidder,  who  in  turn  rents  them  to  the  user  for
a  specified  time.  These  spaces  are  often  the
property  of  the  municipality  which  contracts
directly  with  the  user  for  them.  In  Buenos
Aires  these  stands  are  so  highly  thought  of  that
they  are  often  leased  years  in  advance.
Moving  picture  theatres  abound  in  the