The  method  consists  in  the  close  application  of  the  armlet  to  the  arm
at  the  level  of  the  heart,  the  patient  being  either  in  the  sitting  or  the  recum-
bent posture;  the  appUcation  of  the  finger  to  the  radial  pulse,  the  patient's
arm  being  completely  relaxed  and  the  pressiu'e  being  steadily  raised  by  the
other  hand  by  means  of  the  inflating  apparatus.  When  the  pulse  can  no  longer
be  felt,  the  pressure  is  gradually  released  until  it  is  again  perceptible.  This
manceuvre  is  repeated  as  a  control  observation.  The  height  of  the  mercury
at  which  the  pulse  is  again  felt  indicates  the  systoUc  blood-pressure.  As  the
pnsBure  is  gradually  released  the  lowest  point  at  which  the  maximum  oscil-
latioii  of  the  mercury  occurs  indicates  the  diastolic  pressure.
