172 
Behavior  of  Etlter,  etc. 
!  Am.  Jouk.  PHARH&, 
t    April  1, 1873. 
gtycyphlcea,  Vogl  (Zeits.  d.  CEstr.  Apot.)  Ipecacuanha  strie,  G.  Da- 
rand  (These,  19).  Elastic  striated  Ipecacuanha,  Attfield  (Phariii„. 
Journ.  [2],  vol.  xi,  p.  141).  Ipecacuanha  strie  de  la  Nouvelle- Gre- 
nade, C.  Meaner  (These  Inaug.  p.  15).  Ipecacuanha  violet  of  com- 
merce, Thenot  (These,  p.  122) ;  C.  Menier  (These,  p.  15).  Ipecacu- 
anha of  St.  Martha  and  Carthagena  Ipecacuanha  of  commerce. 
2.  "Minor"  Striated  Ipecacuanha. — Ipecacuanha  des  Cote® 
d' Or  and  Ipecacuanha  noir,  Pelletier  (Journ.  Pharm.  vol.  vi,  p.  261),. 
Ipecacuanha  strie  and  Ipecacuanha  noir  (partim),  Merat  and  De  Len& 
(Diet.  Mat.  Med.  vol.  iii,  p.  648) ;  Guibourt  (Drog.  Simp.  6th  edit, 
vol.  iii,  p.  94).  Ipecacuanha  strie,  Thenot  (These,  p.  120).  Ipecacu- 
anha strie,  C.  Menier  (These,  p.  13).  Ipecacuanha  striata  seu  nigra^ 
Vogl  (Zeits.  (Est.  Apot.)  Brittle  Striated  Ipecacuanha,  Attfield 
(Pharm.  Journ.  [2],  vol.  xi,  p.  141. — Pharm.  Journ.,  Lond.,  Feb.  15^ 
1873. 
BEHAVIOR  OF  ETHER  WHEN  IN  CONTACT  WITH  OTHER  SUB- 
STANCES. 
By  A.  Lieben. 
In  mj  treatise  on  "  The  Origin  and  Production  of  Iodoform  and 
on  the  Application  of  these  Reactions  "  (Ann.  d.  Chem.  u.  Pharm* 
Suppbn.  7,  p.  221),  I  have  said  that  when  ether  is  shaken  up  witfe 
water  and  the  water  then  treated  with  iodine  and  potassa  no  iodoform* 
is  formed,  if  the  ether  is  perfectly  pure  :  but  I  also  observed  that  ifc 
was  difficult  to  obtain  pure  ether,  since  the  simple  contact  of  ether 
with  water,  even  at  the  ordinary  temperature,  and  far  more  rapidlj 
at  100°,  causes  the  ether  to  become  contaminated  with  alcohol.  1 
have  further  investigated  this  subject  by  first  trying  whether  perfectlj 
pure  ether,  when  kept  alone,  remains  unaltered,  and  also,  whether 
contact  with  water  always  produces  alteration  ;  while  I  lastly  tried 
the  effect  of  substances  usually  employed  for  drying  ether.  This  re- 
search appeared  to  me  to  be  the  more  interesting,  since  the  high  sen- 
sitiveness of  the  iodoform  reaction  affords  a  means  of  detecting  slight 
alterations.  When  a  compound  so  fixed  and  stable  as  ether  is  sub- 
ject to  changes  hitherto  scarcely  thought  of,  it  seems  reasonable  tc* 
conclude  that  other  substances  also  undergo  alterations,  which  are* 
not  detected  for  want  of  reagents. 
Ether  by  itself. — I  have  in  another  paper  described  the  methods  of 
