AlASSBt5mm'}    Abstracts  from  the  French  Journals.  415 
preparation  by  using  very  concentrated  solutions  of  ferric  chloride 
and  ammonia,  but  here  also  the  finished  product  was  too  dilute. 
Working  during  the  cold  weather,  the  idea  of  concentrating  the  solu- 
tion by  freezing  suggested  itself  and  was  practically  carried  out  by 
exposing  the  weak  dialyzed  preparation  over  night  in  funnels  closed 
with  corks  or  rubber  tubing  with  clamp.  The  next  morning  the  fluid 
portion  was  allowed  to  drain  off  from  the  ice  and  the  process  repeated 
until  of  the  desired  strength.  It  was  noticed  that  every  freezing 
raised  the  amount  of  ferric  hydrate  one  per  cent.  A  5  per  cent, 
solution  should  have  the  sp.  gr.  1046. — Pharm.  Ztschr.  f.  Russl., 
1889,  373. 
Collodium  can  be  obtained  perfectly  transparent  if  it  be  agitated 
with  carefully  washed  and  ignited  quarz  sand;  the  effect  is  purely 
mechanical,  the  suspended  particles  with  the  sand  forming  a  heavy 
gelatinous  mass  from  which  the  clear  collodium  is  easily  decanted. — 
Kranzfeld,  Pharm.  Ztschr.  /.  EussL,  1889,  392. 
ABSTRACTS  FROM  THE  FRENCH  JOURNALS. 
Translated  for  the  American  Journal  of  Pharmacy. 
A  New  Topical  Preparation  of  Iodine. — M.  Eymonnet 
uses  paper  free  from  size  which  he  saturates  with  iodide  of  potassium, 
and  another  paper  similarly  treated  with  iodate  of  potassium  and 
tartaric  acid.  These  papers,  separated  by  a  very  thin  sheet  of  plain 
paper,  are  then  brought  together  with  gutta-percha  fasteners  and 
enclosed  in  a  thin  sheet  of  gutta-percha.  Plasters  thus  made  will 
keep  indefinitely  and  the  iodine  does  not  appear  until  the  paper  is 
immersed  in  water.  On  application,  iodine  is  disengaged  from  the 
paper  during  about  forty-five  minutes.  The  amount  disengaged  is 
about  thirty  cgm.  for  each  leaf.  The  author  states  that  an  applica- 
tion of  these  leaves  for  forty  or  fifty  minutes  produces  better  effects 
than  can  be  had  by  five  or  six  hours  application  of  iodized  cotton,  or 
five  or  six  paintings  with  the  tincture.  The  plasters  do  not  burn  the 
skin  and  are  tolerated  for  from  half  an  hour  to  an  hour.  When 
necessary  they  may  be  covered  with  gutta-percha,  and  the  clothing 
thus  be  protected. — Bull,  du  Synd.  de  la  Cdte-d'Or;  U  Union  Phar., 
June. 
Concerning  Some  New  Plasters. — M.  Cavailles  writes  (J.  de 
Ph.  et  Ch.;  U  Union  Phar.,  May  15) :  Plasters  containing  anthrarobin, 
