246  Gleanings  from  Foreign  Journals.       {Am  May?wSfrm* 
GLEANINGS  FROM  FOREIGN  JOURNALS. 
By  Geo.  H.  Ochse,  Ph.G. 
Non-poisonous  Substitute  for  Oxalic  Acid. — Hager  recommends  a 
mixture  of  equal  parts  of  partly  desiccated  alum  and  citric  acid  as  a 
substitute  for  oxalic  acid.  The  mixture  must  be  reduced  to  a  fine 
powder,  and  might  be  dispensed  where  oxalic  acid  is  asked  for  and  the 
dispenser  has  his  doubts  regarding  the  intention  of  the  purchaser. — 
Phar.  Rundschau,  xii,  p.  167. 
Sulphanilic  Acid  in  Iodism. — Ehrlich  uses  sulphanilic  acid  as  a 
remedy  for  iodism.  Where  it  is  desirable  to  give  iodine  for  some  time, 
and  the  patient  shows  an  inclination  to  iodism  he  gives  it  in  doses  of 
3  or  4  gm. ;  as  soon  as  the  patient  shows  symptoms  of  iodism  he 
gives  6  or  7  gm.  at  once.  Sulphanilic  acid  is  best  dispensed  in 
aqueous  mixtures  with  bicarbonate  of  sodium,  using  2  parts  of  the 
alkali  with  3  parts  of  the  acid. — Phar.  Rundschau,  xii,  p.  167. 
To  Clarify  Shellac  Solutions  mix  with  J  volume  of  benzin,  allow 
to  stand  one  hour,  agitating  occasionally.  The  mixture  separates  in 
two  layers;  the  benzin  layer  is  decanted  and  the  shellac  solution 
slightly  warmed  to  free  it  from  the  odor  of  benzin.  By  treating  the 
coarsely  powdered  shellac  with  ether  before  dissolving  in  alcohol,  the 
operation  is  facilitated. — Phar.  Rundshau,  xii,  p.  192. 
Butter  Coloring. — Orlean,  better  known  as  annatto  extract,  is  pre- 
pared by  digesting  2  parts  of  curcuma  in  10  parts  of  olive  oil,  and 
filtering. — Phar.  Rundschau,  xii,  p.  192. 
Iodol  Gauze. — Iodol  gauze  is  prepared  by  saturating  gauze  in  a 
solution  of  1  part  each  of  iodol,  resin  and  glycerin  in  10  parts  of  alco- 
hol. Iodol  is  odorless  and  does  not  produce  intoxication,  and  hence 
is  preferable  to  iodoform. — Phar.  Rundschau,  xii,  p.  205. 
Salicylates. — According  to  Milone,  barium  salicylate  Ba(C7H503)2-j- 
H20  is  prepared  by  treating  a  hot  aqueous  solution  of  salicylic  acid 
with  barium  carbonate,  and  filtering  while  hot.  Calcium  salicylate, 
Ca(C7H5Os)2  -f  2  H20,  is  prepared  in  like  manner  from  calcium  carbon- 
ate. Strontium  salicylate,  Sr(C7H5Os)2  +  2  H20  in  the  same  way  from 
strontium  carbonate.  Magnesium  salicylate  Mg(C7H503)2  +  4  H20,  is 
prepared  by  treating  a  hot  solution  of  barium  salicylate  with  magnes- 
ium sulphate,  and  quickly  filtering  the  hot  solution  while  evaporating. 
Zinc  salicylate,  Zn(07H5O3)2  -f  2  H20  is  prepared  like  the  magnesium 
salicylate  from  zinc  sulphate.     Cadmium  salicylate,  Cd(C7H503)2 -f- 
