176  Gleanings  from  the  Foreign  Journals.  {AmA^i;  I1™™' 
both  the  pentasulphide  and  hyposulphite  of  calcium.  The  sulphur 
obtained  under  the  last-named  circumstance  is  coarser,  heavier  and 
darker  in  color,  and  does  not  exhibit  the  same  perfect  globular  form 
under  the  microscope.  Pure  hydrochloric  acid  should  be  used  to  avoid 
the  greyish  tint  imparted  by  iron  sulphide,  which  has  such  a  strong 
surface  attraction  for  the  sulphur  that  it  cannot  be  removed  by  wash- 
ing the  latter  with  dilute  hydrochloric  acid. — Phar.  Jour,  and  Trans.  y 
Sept.  30. 
Solution  of  Chlorinated  Soda. — If  chlorinated  lime  is  decomposed 
by  a  solution  of  carbonate  of  sodium,  the  precipitate  remains  sus- 
pended and  a  clear  liquid  is,  with  difficulty,  obtained  by  decantation. 
By  the  use  of  bicarbonate  of  sodium  a  crystalline  precipitate  of  carbonate 
of  calcium  is  formed,  which  readily  subsides  ;  a  slight  excess  of  the 
bicarbonate  is  rather  advantageous. — Apoth.  Zeitung,  1876,  No.  51, 
from  Indust.  Bl. 
Lac  Ferri.— Under  this  name  a  preparation  is  sold,  containing  ferric 
phosphate  in  suspension.  It  is  made  by  precipitating  very  dilute  solu- 
tions of  ferric  chloride  and  sodium  phosphate,  washing  carefully  and 
removing  the  last  traces  of  free  acid  by  a  little  sodium  carbonate.  The 
amount  of  phosphate  is  then  ascertained  by  drying  a  portion,  and  the 
moist  precipitate  is  mixed  with  water  until  the  mixture  contains  1  to  1*2 
per  cent,  of  ferric  phosphate.— Phar.  Zeitung,  No.  7,  /  O~0 
Elixir  of  Monobromated  Camphor. — Dambier  recommends  to 
dissolve  40  grams  of  sugar  in  60  grams  of  56  per  cent,  alcohol  by  the  aid 
of  heat  ;  filter  if  necessary,  and  add,  while  hot,  0*50  gram  of  mono- 
bromated camphor.  A  tablespoonfui  of  the  solution,  which  may  be 
aromatized  to  suit  the  taste,  weighs  20  grams  and  contains  O'lO  gram 
(ij  grains)  of  the  bromine  compound. 
The  author  endeavored  to  effect  the  formation  of  monobromated 
camphor  by  heating  bromine  and  camphor  in  the  requisite  proportion 
in  the  presence  of  alcohol  and  simple  syrup,  but  although  obtaining  a 
colorless  liquid,  is  inclined  to  regard  it  as  containing  mainly  hydrobromic 
acid  and  unaltered  camphor. — V  Union  Phar.,  1876,  December,  353. 
I.  Munday  recommends  an  elixir  of  double  the  strength  of  the 
preceding,  and  suggests  the  substitution  of  sugar  by  glycerin,  which 
retains  the  bromated  camphor  much  better  in  water,  remaining  even 
perfectly  clear  with  water  in  such  proportions,  which  would  separate  a 
portion  of  the  medicinal  compound  as  a  film  from  a  saccharine  elixir. 
He  mixes  12  grams  of  90  per  cent,  alcohol,  8  orange  flower  water  and 
10  glycerin,  and  dissolves  in  the  mixture  0*30  gram  monobromated 
camphor^by  the  aid  of  a  gentle  heat. — Phar.  Jour,  and  Trans.,  1877. 
March  3. 
