294  Practical  Notes  from  Various  Sources.  {Am-jln™m7aTm' 
crystallized  potassium  phenate,  and  washing  the  orange-red  precipi- 
tate, which  has  only  a  very  faint  odor  of  phenol,  and  has  been  given 
in  doses  of  about  -02  gm.  (-J  grain). 
Collodium  corrosivum  is  prepared  by  dissolving  1  part  of  corrosive 
sublimate  in  from  30  to  40  parts  of  collodion  (12  to  15  grains  in  1 
fluidounce).  It  may  be  used  in  those  cases  where  the  gradual  effects 
of  mercuric  chloride  are  needed,  and  has  been  used  more  particularly 
for  the  removal  of  warts,  the  application  being  made  once  a  day. 
Collodium  antisepticum,  which  may  be  used  like  ordinary  cotton,  is 
recommended  (Jour.  Medec,  December  26,  1886)  to  be  prepared  from 
powdered  mastic  3  gm.,  powdered  narcotine  1  gm.,  balsam  of  Peru 
1  gm.,  and  chloroform  5  gm.  Strips  of  linen  or  silk  soaked  in  this 
solution,  form  an  excellent  adhesive  plaster. 
Oleum  cinereum  is  a  mercurial  preparation  used  by  Dr.  E.  Lang 
(Wien.  Med.  Woch.,  1886)  in  syphilitic  complaints.  It  is  prepared 
by  triturating,  in  a  cool  place,  lard,  oil  and  mercury  until  the  latter 
becomes  uniformly  suspended,  the  finished  preparation  to  contain  20 
per  cent,  of  the  metal.  It  is  used  as  a  local  dressing;  also  as  an  in- 
jection to  enlarged  glands,  0*01  to  0*02  cc.  being  given  once  a  week 
or  in  a  fortnight.    For  use  it  is  melted  by  the  warmth  of  the  hand. 
TJnguentum  cretw  prceparatce  is  recommended  by  Dr.  Dyce  Duck- 
worth (Practit.,  Jan.,  1887)  as  an  application  in  erysipelas.  It  is 
prepared  from  equal  parts  of  prepared  chalk  and  lard,  and  to  each 
ounce  of  the  ointment  is  added  30  grains  of  carbolic  acid.  An  equally 
serviceable  ointment  is  obtained  with  precipitated  calcium  carbonate, 
and  this  is  of  a  pure  white  color. 
Hair  Tonic. — The  following  local  application  has  been  recom- 
mended by  Prof.  Bartholow :  Fluid  extract  of  pilocarpus  and  tincture 
of  cantharides,  of  each,  fSss  ;  glycerin  and  petrolatum,  of  each,  f5j . 
—Coll  and  Clin.  Bee,  May,  1887. 
Tilbury  Fox  uses  in  incipient  baldness  a  wash  composed  of  tinct. 
nux  vomica,  3iv ;  tinct.  cantharides,  5ijss ;  lanolin,  5ijss ;  acetic  acid7 
5iv;  and  rose  water,  5vj. — Med.  News,  Jan.  8,  1887. 
Oil  of  erigeron  has  been  observed  by  Dr.  Bartholow  (Physic,  and  Surg.r 
April  1887,)  to  check  the  waste  of  albumen,  to  lessen  the  irritability  of  the 
bladder  in  cystitis,  and  to  afford  considerable  relief  in  bronchial  catarrh 
and  similar  affections.  It  was  usually  given  in  doses  of  five  drops,  every 
three  or  four  hours. 
