Am.  Jour.  Pharm.  ) 
October.  1909.  / 
British  Conference. 
489 
ing  are  the  pharmacist's  special  sphere.  The  advantages  to  the 
public  are  many.  Without  necessarily  implying  inaccuracies  in  dis- 
pensing by  medical  men,  or  doubting  their  skill  in  the  mixing  of 
medicines,  dispensing  by  pharmacists  is  advantageous  to  the  public 
because  their  compounding  to  the  medical  man's  prescribing  is  of 
the  nature  of  a  check  on  both. 
Problems  of  the  Poison  Schedule. 
By  H.  Wippell  Gadd. 
The  author,  after  a  few  introductory  remarks,  proceeded  to 
comment  upon  some  items  in  the  Schedule,  contrasting  the  1868  and 
1908  entries,  commenting  especially  on  the  latter. 
Antimonium  Sulphuratum. 
By  F.  H.  Alcock. 
After  speaking  of  its  rather  scant  use  in  medicine,  the  author 
devoted  considerable  time  to  its  important  use  in  the  manufacture  of 
rubber.  He  states  that  it  is  liable  to  contain  harmful  impurities, 
generally  thiosulphate. 
Determination  of  Antimony  in  Sulphide  Preparations. 
By  David  Lloyd  Howard  and  J.  Bristowe  P.  Harrison. 
The  authors  give  an  assay  for  antimony  sulphides  which  can  be 
worked  more  rapidly  and  with  less  trouble  than  the  gravimetric 
process.  It  consists,  practically,  in  fusing  the  sulphide  with  sodium 
hydroxide,  -which  converts  the  antimony  into  sodium  metantimonate, 
which,  when  brought  into  solution  and  reduced  to  the  lower  state  of 
oxidation,  is  determined  volumetrically  by  means  of  standard  iodine 
solution.  The  sulphur,  which  is  oxidized  to  sulphuric  acid,  is  deter- 
mined by  precipitation  as  barium  sulphate. 
Concerning  the  Quantitative  Determination  of  Free  Sali- 
cylic Acid  in  Bismuth  Salicylate. 
By  J.  Bristowe  P.  Harrison. 
The  result  of  extraction  of  the  free  acid  by  the  use  of  ether, 
petroleum-ether,  acetic-ether,  acetone,  chloroform,  and  benzol  (90 
