Report  on  the  journey  down  the  river  Paraná 
to  Assuncion  and  the  return  journey  over  Buenos  Aires,  Monte¬ 
video  and  Rio  Grande 
made  by 
Dr.  Adolpho  Lutz,  Dr.  H.  C.  de  Souza  Araujo  and  Dr.  O.  da  Fonseca. 
From  January  to  March  1918. 
(With  Plates.) 
Summary  of  the  diaries  of  Drs.  Lutz 
and  Araujo. 
(Inset  numbers  refer  to  illustrations.; 
In  the  beginning  of  the  year,  a  journey 
down  the  river  Paraná  was  made  at  the  ex¬ 
pense  of  the  government  of  Paraná  and  the 
Instituto  O.  CRUZ  by  Drs.  ADOLPHO 
LUTZ,  HERACLIDES  DE  ARAUJO  and  O. 
DA  FONSECA  jun.  Photographs  were 
taken  by  Drs.  ARAUJO  and  FONSECA. 
The  commission  started  from  São  Paulo,  stop¬ 
ping  first  at  BauriP-^then  at  Itapura  where  they 
saw  the  celebrated  falls  of  the  river  Tietê3,4 
and  soon  reached  the  Paraná5,  staying  in  Tres 
Lagoas  on  the  Matto  Grosso  bank.  There 
began  the  journey  on  the  Upper  Paraná  which, 
though  very  wide,  was  hardly  known  until  a 
few  years  ago;  even  now,  its  banks  are  only 
very  sparsely  inhabited.  The  medical  commis¬ 
sion  embarked  on  a  small  steamer,  the  Para¬ 
ná6,  which  took  them  to  Porto  Tibiriçá7- 10,  a 
settlement  of  the  Companhia  de  Viação  São 
Paulo  Matto  Grosso  with  extensive  pastures, 
in  which  the  cattle,  transported  from  Matto- 
Grosso  on  the  opposite  bank,  may  rest.  From 
Porto  Tibiriçá  they  went  downstream11-31  to 
Porto  Mojoli32-43  in  a  barge  towed  by  a  gazoli- 
ne  launch  belonging  to  the  Empreza  Matte- 
Larangeira.  Porto  Mojoli  is  a  settlement 
of  the  same  Company,  above  the  celebrated 
falls  of  the  Paraná,  called  Salto  Guayra  or 
Sete  Quedas.  Enormous  quantities  of  Matte 
brought  from  Matto  Grosso  are  sent  by  rail 
from  this  place  to  Porto  Mendes46  where  the 
river  again  becomes  navigable,  /liter  having 
been  the  guests  of  the  Empresa  for  some 
time  and  making  several  excursions44,45  the 
travellers  proceeded  to  Porto  Mendes46  and 
went  on  board  one  of  the  steamers  of  the 
regular  service  on  the  Lower  Paraná47. 
They  next  stopped  at  the  military  settle¬ 
ment  and  colony  Iguassu48-58,  one  of  the  re¬ 
motest  points  of  the  southern  frontier  of 
Brasil  which  is  still  very  difficult  to  reach 
by  land.  Near  it,  they  saw  the  cataracts  of 
the  Iguassu59-66  river.  These  belong  partly 
to  the  argentinian  Missiones,  partly  to  Brazil. 
There  are  more  visitors  on  the  argentinian 
side  but  the  scenery  is  finer  when  seen  from 
the  brazilian  bank.  There  are  small  hotels  on 
both  sides.  The  commission  stayed  for  some 
