ANoVemberPSa"}       The  Netherlands  Pharmacopoeia.  523 
50  Gm.,  or  10  Gm.  with  a  finer  scale.  With  this  scale,  which  is 
known  as  a  milligramme  scale,  the  maximum  declination  or  vibra- 
tion should  not  be  greater  than  2  mm.  in  1  dm.,  and  not  continue 
longer  than  one  second,  when  using  a  weight  of  5  mg.  Scale  B  is 
known  as  a  gramme  scale  and  is  used  in  weighing  amounts  not 
greater  than  250  Gm.,  or  100  Gm.  with  a  finer  scale.  With  this 
scale  the  sensitiveness  should  be  the  same  as  in  Scale  A,  when  using 
50  mg.  weight.  Scale  B2  is  used  for  weighing  amounts  of  sub- 
stances not  exceeding  1  kg.,  or  250  Gm.  with  a  scale  less  sensitive 
than  Class  B.  With  this  scale  the  sensitiveness  should  be  the  same  as 
in  Scale  A,  when  using  a  250  mg.  wreight. 
Of  the  articles  official  in  the  Third  Edition,  55  were  deleted,  and 
195  new  articles  were  added,  making  a  total  number  in  the  Fourth 
Edition  of  652.  Of  these  about  210  are  required  to  be  kept  in  stock 
at  all  times  by  the  apothecary.  The  remaining  442  •  articles  are 
indicated  by  a  plus  (  +  )  sign.  In  accordance  with  the  Brussels 
Conference,  as  already  pointed  out,  the  strength  of  tinctures  of 
potent  drugs  is  10  per  cent. ;  acidum  hydrocyanicum  dilutum,  2 
per  cent. ;  aqua  laurocerasi,  1/10  of  1  per  cent.,  or  1  part  in  1000,  of 
hydrocyanic  acid ;  the  different  narcotic  extracts  and  fluidextracts 
and  liquor  kalii  arsenicosi,  1  per  cent. ;  pulvis  ipecacuanhas  opiatus, 
10  per  cent,  of  each  of  the  potent  drugs ;  sirupus  ferri  iodati,  5 
per  cent. ;  vinum  stibiatum,  4/10  of  1  per  cent,  or  4  per  1000.  In 
order  that  physicians,  as  well  as  apothecaries,  shall  have  in  mind  the 
changes  in  strength  of  the  preparations  of  potent  drugs  the  abbrevia- 
tion F.I.  (Formula  Internationalis)  is  placed  after  the  title. 
In  a  table  (Table  A)  a  list  of  42  poisons  is  given  which  should 
be  kept  in  a  closet  to  themselves.  In  another  table  a  list  of  poisons  is 
given  which  may  be  kept  out  convenient  for  use  if  marked  with  a 
label  bearing  a  distinct  blue  cross.  Another  table  includes  medi- 
cines which  physicians  are  required  to  keep  on  hand.  Thus,  with 
the  number  of  drugs  and  preparations  which  the  pharmacist  must 
always  have  on  hand,  and  those  which  physicians  are  required  to 
keep  at  hand,  the  interests  of  the  public  are  looked  after  in  a  manner 
which  seems  to  be  very  commendable. 
Doses. — In  order  to  satisfy  the  expressed  wish  of  most  of  the 
apothecaries  of  Holland  who  desired  to  have  a  guide  that  they  might 
follow,  the  single  maximum  dose  and  the  maximum  dose  in  twenty- 
four  hours  for  an  adult  are  given,  these  being  given  also  in  the  index, 
which  is,  in  fact,  an  alphabetical  table  giving,  in  addition,  informa- 
