41 
with  physiological  salt  solution,  by  commu¬ 
nicating  D  with  A.  The  needle  such  being 
washed  of  the  solution,  while  still  within 
the  vein,  we  now  stop  the  passage  of  the 
liquid  and  with  draw  the  needle. 
The  apparatus  is  fastened  to  a  board, 
which,  in  its  turn,  moves  on  a  board  of 
double  size-  This  changeable  height  of  the 
apparatus  facilatates  the  quickness  of  the  in¬ 
jection  and  dispenses  with  the  pear.— 
We  now  wish  to  express  our  sincere 
thanks  to  Dr.  OSWALDO  CRUZ  for  the 
distinction  of  publishing  this  paper  in  the 
“Memories”  and  for  his  his  valuable  advise. 
We  are  also  indebted  to  Dr.  EZEQUIEL 
DIAS  for  his  daily  aid. 
We  also  wish  to  thank  Prof.  Dr.  SA¬ 
MUEL  LIBANIO  for  his  sollicitude  in  put¬ 
ting  his  ward  at  our  disposal  and  for  his 
aid  in  the  clinical  researches. 
We  are  also  indebted  to  Drs.  VIRGILIO 
MACHADO  and  MARCELLO  LIBANIO,  to 
the  former  for  his  clinical  observations  and 
to  the  latter  for  his  masterly  propaedeutic 
advices. 
Manguinhos,  23-  5-1916. 
