440 
Fractional  Notes. 
(  A.m.  Jour.  Pharm. 
\       Sept.,  1877. 
2.  For  the  preparation  of  syrups  containing  juices,  in  which  case 
the  concentration  should  be  carried  far  enough  that  after  mixing  with 
the  simple  syrup  the  requisite  density  is  obtained. 
3  For  the  conservation  of  juices,  and 
4.  For  chemical  analysis  the  process  may  be  used  with  advantage. 
FRACTIONAL  NOTES. 
By  Hans  M.  Wilder. 
Honey  in  Tinctures. — Tinct.  cardam.  comp.  and  Tinct.  opii 
camph.  both  contain  honey.  Since  the  proportion  is  so  small  (1  :  20 
and  1  :  16)  that  it  cannot  be  of  any  moment,  neither  therapeutically 
nor  as  a  flavoring  agent,  might  the  honey  not  be  replaced  by  simple 
syrup  ? 
Tincture  Stoppers. — None  of  the  least  disagreeable  things  which 
we  have  to  contend  with  (especially  when  we  are  in  a  hurry)  is  the 
loosening  of  glass  stoppers  which  have  become  cemented  (as  it  were) 
to  the  neck  of  the  bottles.  This  can  be  entirely  prevented  by  rubbing 
the  stoppers  with  a  piece  of  paraffin  and  giving  them  a  turn  in  the  neck 
of  the  bottle,  so  as  to  distribute  a  thin  coating  of  paraffin  all  over. 
Two  or  three  times  a  year  this  coating  has  to  be  renewed  (at  all  events 
seldom  enough  not  to  occasion  any  trouble).  Paraffin  may  practically 
be  considered  insoluble  in  the  different  menstrua  of  the  tinctures. 
Syrupus  Giberti. — Having  of  late  very  often  had  to  prepare  it,  and 
not  finding  the  formula  in  American  pharmaceutical  journals,  I  here- 
with give  it  as  communicated  to  me  by  the  physician.  2  grains  red 
iodide  of  mercury  and  100  grains  of  iodide  of  potassium  are  dissolved 
in  2  fluidrachms  of  water,  and  simple  syrup  added  up  to  6  fluidounces. 
This  is  somewhat  stronger  than  the  original  formula,  which  adds  syrup 
up  to  10  troyounces. 
Hydrated  Oxide  of  Iron. — The  U.  S.  Pharmacopoeia  precipitates 
solution  of  tersulphate  of  iron  with  water  of  ammonia,  and  washes  it 
on  a  muslin  strainer.  In  cases  of  emergency,  the  Pharmacopoeia 
permits  only  to  press  the  precipitate  as  much  as  possible  on  a  strainer. 
Having  had  to  make  it  of  late  in  three  cases  of  arsenic  poisoning,  I 
found  the  procedure  of  the  German  Pharmacopoeia  quicker  and  easier. 
Sixty  parts  solution  of  tersulphate  of  iron  is  mixed  with  120  parts  of 
