308 
Gleanings  from  the  German  Journals.  { 
Am.  Jour.  Pharrn. 
June,  1892. 
whilst  the  presence  of  free  chlorine  after  agitation  indicates  a 
superior  preparation.  The  following  reaction  forms  the  basis  for 
the  test :  KI  -f  (Cl2)3  +  3H20  =  KI03  +  6  HQ. — Dr.  L.Winkler, 
Phar.  Post,  1892,  477. 
Lactic  Acid  Bougies  for  the  treatment  of  tubercular  fistula  are 
made  by  melting  over  a  moderate  fire  50  each  of  gelatin,  water 
and  lactic  acid,  and  then,  after  the  addition  of  30  menthol,  pouring 
into  moulds  which  are  to  be  kept  on  ice  for  24  hours  and  then 
placed  in  a  desiccator  (a  metal  box  with  double  bottom,  the  inner 
one  perforated)  over  fused  calcium  chloride  for  8- 10  days,  when  the 
proper  consistency  is  attained  ;  the  bougies  now  contain  about  40 
per  cent,  lactic  acid  and  are  prevented  from  absorbing  moisture 
either  by  coating  with  collodion  or  by  immersion  in  oil  or  benzin 
containing  30  per  cent,  menthol.  By  replacing  the  gelatin  with 
starch  or  dextrin  the  bougies  become  harder  but  lose  elasticity; 
the  menthol  is  added  to  prevent  the  painfulness  of  the  lactic  acid 
applications.  The  bougies  coated  with  collodion,  before  being 
applied,  have  an  end  cut  off  obliquely  so  as  to  allow  the  liquefaction 
of  the  mass  ;  after  several  days  the  collodion-film  can  be  removed 
from  the  fistula. — Dr.  Zippel  ( Wr.  med.  Bl)  Pharm.  Post,  1892,  342. 
Chloroform. — The  sulphuric  acid  test  for  the  purity  of  chloroform 
as  given  by  M.  C.  Traub  {Am.  Jour,  of  Pharm.,  1K92,  142), 
critically  examined,  proved  that  a  pure  chloroform  is  not  per- 
ceptibly altered  by  the  treatment.  Five  samples  answering  the 
requirements  of  the  Pharm.  Germ.  Ill  were  submitted  to  the  test  : 
20  cc.  each  of  chloroform  and  concentrated  sulphuric  acid  were 
placed  in  dark,  glass-stoppered  bottles  and  agitated  frequently 
during  each  day  of  the  trial  ;  at  intervals  of  eight  days  one  cc.  of 
the  acid  was  removed,  diluted  with  5  cc.  water,  1  cc.  ^  silver 
nitrate  solution  added  and  the  effect  observed.  At  the  end  of  first 
eight  days  an  examination  of  the  atmosphere  in  the  bottles  was 
made  by  immersing  a  rod  moistened  with  ammonia  to  determine  if 
hydrochloric  acid  was  liberated. 
Make.  Sp.  Gr.  Ammonia  Test.  Silver  Test  after  8  Days. 
I.  Pictet, 
1*4879     almost  invisible  clouds. 
II.  M.  C.  Traub, 
•4864 
perfectly  transparent, 
like  I. 
hart  &  Co.,  i 
IV.  C.  H.  B.,  .  .  .  .    14966    distinct  clouds. 
V.  Puriss.  extra  H.,   14897     heavy  clouds. 
distinct  opalescence. 
