67 
19  IX.  We  went  on  horseback  to  Furna 
d'Agua,  where  we  found  Triatoma  but 
no  infected  specimens,  and  returned  to  For¬ 
taleza,  the  distance  covered  being  about  13 
to  14  kilometers.  Afterwards  we  found  some 
Platiorbis  centimetralis  in  an  affluent  of  the 
river  Una  and  obtained  evidence  of  Schi- 
stosomum  infection  in  man.  Near  the  house 
there  were  some  large  breeding  places  of 
Culex  taeniorhynchus .  On  the  return  journey 
we  stopped  at  the  falls  of  the  rio  Mentiroso, 
where  there  was  a  species  of  Podostemonaceae 
with  larvae  and  nymphae  of  Simulium  orbitale. 
The  flora  was  rich  and  interesting,  as  the 
road  crosses  some  mountain  chains,  where 
the  land  was  less  dry  than  in  the  other 
country  we  had  passed  through. 
20  IX.  We  took  the  train  to  Bello 
Jardim,  where  we  found  centimetralis  in 
some  ponds  and  in  the  river  Bitury.  We  also 
got  some  evidence  of  the  presence  of  Sch. 
tnansonL 
20  IX.  We  returned  by  rail  from  Bello 
jardirn  to  Recife. 
22  to  24  IX.  The  weather  was  rainy. 
We  worked  in  the  laboratory,  visited  the  hos¬ 
pital  and  got  ready  for  a  new  journey. 
25  IX.  We  took  the  train  to  Palmares 
where  we  examined  the  river  Una  up  stream 
from  the  town;  we  collected  many  centime- 
t ralis,  one  species  of  Ancylus  and  several  of 
Simulium. 
26  IX  We  walked  to  the  rapids  at  the 
railway  bridge,  where  we  found  the 
beautiful  flowers  of  a  Podostemonacea  and 
many  larvae  and  nymphae  of  Simulium.  Af¬ 
terwards,  we  accepted  the  amiable  invitation 
of  Coronel  PEDRO  LUIZ  PARANHOS 
FERREIRA,  who  showed  us  his  important 
fazenda,  in  which  there  are  some  fine 
woods.  We  took  a  ride  with  him  and 
collected  some  50  Tabanidae  belonging  to 
about  12  species.  The  most  common  was 
Tabanus  ( Macrocortnus )  oculus  which  I 
knew  from  Pará;  it  is  also  very  common  in 
Venezuela  and  Ecuador. 
27  IX.  We  took  a  freight  train  to  Colo¬ 
nia,  where  there  is  a  sugar  factory,  and  after¬ 
wards  the  passenger-train  to  Guaranhuns 
where  we  passed  the  night. 
28  IX.  We  left  at  four  o’clock  in  the 
morning,  and  motored  the  240  kilometers 
which  separated  us  from  the  factory  and  set- 
lement  of  Pedra,  in  CORONEL  DELM1RO 
DE  GOUVEIA’s  cars.  We  passed  through  a 
very  arid  region,  where  all  the  rivers  were 
either  dry  or  interrupted.  In  their  remnants 
and  in  some  ponds  which  still  remained, 
we  found  several  specimens  of  Planor- 
bis  centimetralis  The  xerophytic  flora  was 
very  poor,  but  we  saw  some  interesting  ani¬ 
mals. 
29  IX.  We  visited  the  factory  and  the 
settlement,  finding  both  of  them  veiy 
interesting.  In  the  afternoon  we  went  by  mo¬ 
torcar  to  the  celebrated  falls  of  Paulo  Affonso. 
walking  the  last  3  kilometers. 
30  IX.  We  visited  the  falls  of  Paulo 
Affonso.  They  are  divided  and  can  not  be 
seen  entirely  except  from  a  great  dis¬ 
tance,  but  their  sight  is  very  beautiful.  The 
most  imposing  and  impressing  view  is  that 
from  the  iron  stairs  leading  down  to  the  en¬ 
gine-house,  which  is  suspended  above  the  last 
and  most  perpendicular  fall,  like  a  bird  cage 
on  a  wall.  The  river,  at  the  time  of 
our  visit,  was  very  low  and  allowed  us  to 
gather  some  Podostemonaceae  (of  the  genus 
Ligea)  on  which  there  were  larvae  and  pu¬ 
pae  of  Simulium  orbitale  LUTZ.  In  another 
arm  of  the  river,  now  dry,  I  found  the  same 
pupae  on  a  stone  wall,  which  is  very  unu¬ 
sual.  It  is  remarkable  that  this  species,  is 
the  only  one,  found  in  the  large  falls  of 
Pirapora  and  Paulo  Affonso. 
1  X.  In  PEDRA  we  observed  a  small  epi¬ 
demic  of  alastrim  (milk-pox).  We  examined 
specimens  from  15  people,  without  finding 
one  egg  with  lateral  spine. 
2  X.  I  examined  and  photographed  a 
case  of  madira-foot.  This  disease,  probably 
imported  to  Brazil  where  it  is  generally 
rather  rare,  seems  somewhat  more  frequent 
in  the  State  of  Alagoas,  to  judge  by  some 
observations  made  in  Bahia.  Shortly  after 
noon  we  took  the  train  and  reached  Pira¬ 
nhas  a  little  before  4  p.  m.  We  hired  a  large 
