When  the  aluminum  bulb  is  used,  a  probe  of  similar  metal  must  also
be  used;  but  in  cases  where  the  course  of  the  bullet  has  been  so  tortuous,
or  the  track  it  made  has  healed  so  that  it  cannot  be  followed  by  the  probe,
the  steel  needle  must  be  thrust  through  the  tissues  in  various  directions
in  search  for  it;  in  such  a  case  the  steel  bulb  must  be  used,  not  the
aluminum  one.
Hydro-Electrization. — We  *  have  devised  a  method  of  applying  elec-
tricity by  means  of  a  continuous  stream  or  jet  of  water  flowing  from  a
metallic  tube — or  one  that  has  a  metallic  orifice — connected  with  one
pole,  while  the  body  of  the  patient  is  in  any  convenient  way  con-
nected with  the  other.  A  jet  or  stream  of  water,  so  long  as  it  is
not  broken  into  spray,  will  conduct  the  current  from  one-eighth  of
an  inch  to  one  or  two  inches  from  the  orifice,  according  to  the  size
of  the  stream,  to  any  part  where  it  may  be  applied.  Contractions  of
muscles  and  all  the  effects  of  ordinary  localized  electrization  may  be
thus  produced.
This  method  of  electrization  is  adopted  for  those  localities  where,  on
account  of  the  natural  sensitiveness  or  from  the  nature  of  the  disease,

*  "  Further  Study   of   Electro- Anesthesia,"   etc.     Transactions   American   Electro-
Therapeutic  Association,  September,  1893.
ordinary  electrodes,  by  their  mechanic  irritation,  cause  unbearable  pain,
or  where,  for  anatomical  reasons,  they  cannot  be  applied.
