Am'sJepUt!'iP892arm'}  Gleanings  from  the  German  Journals.  463 
the  corresponding  quantity  of  the  emulsion  is  taken,  and  made 
into  a  mass  by  the  addition  of  a  little  powdered  liquorice  and 
althaea.  The  emulsion  should  be  taken  from  the  bottle  with  a 
horn  spatula  since  iron  discolors  it ;  the  pill  mass,  however, 
can  be  removed  from  the  mortar  with  an  iron  spatula. — J.  Norberto, 
Jr.,  Pharm.  Post,  1892,  817.  ' 
Test  paper  for  sulphurous  acid. — 2  gm.  wheat  starch  are  made  into  a 
thin  paste  with  100  cc.  boiling  water  and  a  solution  of  0-2  gm.  potas- 
sium iodate  in  5  cc.  water  added  ;  a  good  quality  of  filtering  paper  is 
impregnated  with  this  solution,  allowed  to  dry,  cut  into  small  strips 
and  carefully  preserved  in  glass-stoppered  bottles.  This  paper  when 
moistened  will  indicate  very  minute  quantities  of  free  sulphurous 
acid  by  the  appearance  of  a  blue  color  (the  sulphurous  acid  liber- 
ates iodine  from  the  iodate  and  this  in  turn  reacts  upon  the  starch, 
producing  blue  iodide  of  starch).  Sulphites  will  also  yield  the  blue 
color  if  the  paper  be  first  moistened  with  a  diluted  hydrochloric 
acid  (1  :  100);  the  hydrochloric  acid  itself  has  no  action  upon  the 
paper,  being  used  to  liberate  small  quantities  of  the  sulphurous 
acid. — Sudd.  Apotheker  Ztg.,  1892,  219. 
Tooth  ache  drops. — (I)  Oils  of  cajeput  and  cloves,  each,  ro;  chloro- 
form, 2-0.  (II)  Camphor  and  chloral  hydrate  each,  2-o  ;  spirit  of  pep- 
permint, ro.  (Ill)  Tincture  of  cannabis  indica,  oil  of  cloves  and 
chloroform,  each,  2  0.  (IV)  Tinct.  opii  crocat.,  olei  menth.  pip., 
spir.  aether.,  aa  2  0. 
Tooth  soaps,  hard. — Precipitated  chalk,  8-o,  carmine,  0-2,  dissolved 
in  water  of  ammonia,  powdered  soap,  20*0;  peppermint  oil,  0-5  ;  alco- 
hol, 3-0;  after  moulding  it  is  to  be  dried.  Soft. — Precipitated  chalk, 
20-0,  carmine,  0-2  dissolved  in  water  of  ammonia,  powdered  soap, 
5-0;  peppermint  oil,  0  5;  syrup,  glycerin,  and  alcohol  of  each  suffi- 
cient. Liquid. — Soap  liniment,  ioo  o,  tincture  of  myrrh  and  glycerin, 
each,  20*0;  oil  of  peppermint,  0-5  ;  color  to  suit. 
looth  balsam. — Extract  of  opium,  camphor  and  Peruvian  balsam, 
each,  ro;  powdered  mastich,  2-0;  chloroform,  200;  to  be  applied  on 
cotton. 
Tooth  cement. — Pure  zinc  oxide,  98-0  ;  magnesia,  2-0;  glacial  phos- 
phoric acid,  q.  s.;  the  powders  are  to  be  mixed  in  a  warm  mortar, 
with  sufficient  melted  acid  to  make  a  paste ;  it  is  to  be  used  at 
once  as  it  rapidly  hardens. 
