73 
their  course  and  features.  It  is  hard  to  ima¬ 
gine  what  will  become  of  these  people  and 
their  offspring  in  course  of  time,  if  nothing  is 
done  against  this  disease.  After  visiting  the 
interior  of  these  four  States,  one  feels  how 
absurd  it  is  to  talk  of  ankylostomiasis  in  cer¬ 
tain  other  regions,  so  high  is  the  proportion 
in  number  and  intensity  here  shown  by  this 
parasitical  disease. 
Nobody  can  have  even  a  faint  idea  of 
the  intensity  and  the  extension  of  ankylos¬ 
tomiasis  in  these  northern  States,  nor  is  any 
one  troubling  about  it  and  few  are  the 
people  in  these  regions,  who,  in  all  their 
lives  have  taken  some  antihelminthic,  or  who 
are  in  the  habit  of  using  sanitary  installations 
or  shoes". 
Conclusion. 
This  number  also  contains  a  monograph 
on  brazilian  Planorbis.  Later  on,  we 
hope  to  publish  a  paper  on  the  Tremato- 
des  found  in  them. 
