482       Recent  Literature  Relating  to  Pharmacy.     { A^ioberfi902r.m* 
permanganate  to  the  water  to  give  it  a  permanent  pink  color,  and 
the  process  of  distillation  resorted  to  for  its  removal.  The  combina- 
tions which  may  be  formed  by  the  addition  of  other  substances  are 
as  numerous  as  they  are  varied.  A  partial  list  is  here  given,  which 
may  be  used  with  one  another  in  varying  proportions.  Those  most 
generally  used  are  :  Acetanilid,  acid  boric,  acid  carbolic,  acid  pyro- 
gallic,  acid  gallic,  acid  tannic,  acid  salicylic,  alum,  balsam  peru,  bis- 
muth subgallate,  bismuth  subnitrate,  calomel,  camphor,  chrysarobin, 
creosote,  guaiacol,  ichthyol,  iodoform,  menthol,  naphthol,  oil  cake, 
resorcin,  salol,  sulphur  sublimed,  tar,  thymol  and  zinc  oxide.  A 
pleasant  oleaginous  preparation  can  be  produced  with  the  powdered 
oleo-stearates  or  oleo-palmitates,  in  combination  with  any  of  the 
above-mentioned  substances,  by  incorporating  the  same  with  a  quan- 
tity of  pure,  bland,  odorless  and  colorless  liquid  petroleum. 
The  following  formula  gives  an  idea  of  the  method  involved  : 
MlST/URA  OlvEO-PAIvMlTATE  ZlNCI  WITH  ACIDS  BORICI  AND  CARBOUCI. 
Powdered  oleo-palmitate  of  zinc  3  i j 
Acid  boric  9j 
Solution  acid  carbolic  rt^v 
Liquid  petroleum  alba,  q.  s. 
Triturate  the  oleo-palmitate  of  zinc  and  boric  acid  with  the  petro- 
leum ;  to  this  add  the  solution  of  carbolic  acid,  and  agitate  to  a 
iiomogeneous  mixture.    Always  agitate  before  using. 
RECENT  LITERATURE  RELATING  TO  PHARMACY. 
CANNABIS  INDICA. 
E.  M.  Holmes,  F.L.S.  {Phar.  Jour.,  Aug.  16,  1902)  gives  some 
extracts  from  a  "  Report  on  the  Cultivation  and  Use  of  Ganja,"  by 
Dr.  D.  Prain.  The  names  that  are  applied  to  the  different  prepara- 
tions or  different  forms  of  this  drug  as  it  occurs  in  India,  are  of 
interest. 
Ganja. — This  is  the  most  important  preparation  of  the  plant,  from 
the  point  of  view  of  medicine  or  pharmacy.  It  consists  of  the  flow- 
ering tops  of  the  female  plants,  deprived  as  much  as  possible  of 
leaves. 
Gauza. — This  is  applied  to  ganja  which  comes  from  Bombay ;  it 
is  usually  considered  inferior  in  quality  to  that  from  Calcutta. 
