A"o™XuT'\        P/iar maceutical  Colleges,  etc.  475 
red,  which  become  yellow  on  cooling.  On  re-heating',  the  red  color  begins  to 
return  at  70°,  and  at  220J  a  splendid  garnet  shade  is  attained.  This  is  exactly 
the  inverse  of  the  phenomena  presented,  under  similar  circumstances,  by  the 
biniodide.  t  he  crystals  of  protiodide  melt  at  290°  to  a  black  liquid,  which 
boils  at  310°.  11'  more  rapidly  heated  it  is  decomposed,  yielding  mercury  and 
a  light  yellow  sublimate,  which  is  not,  as  might  be  expected,  a  compound  richer 
in  iodine,  but  an  oxy  iodide  which  may  be  represented  by  the  formula,  Hgia 
Oo  I7  ==  6  Hg  O,  7  Hg  1.  This  oxy-iodide  is  at  first  bright  yellow  and  crys- 
talline, but,  especially  if  exposed  to  the  light,  it  soon  becomes  first  orange  and 
then  brick  red,  and  falls  to  a  powder. — Chem.  News,  July  25,  from  Compt. 
Bend. 
Erythrophenic  Acid,  a  New  Reaction  of  Phenol  and  Aniline. — E.  Jacque- 
min. —  When  phenol  is  treated  with  chlorine- water,  no  reaction  is  observed, 
and  ammonia  added  to  the  mixture  subsequently  develops  no  coloration.  It  is 
known  that  aniline,  on  the  contrary,  suspended  iu  water,  with  the  addition 
of  a  solution  ot  chlorine,  takes  a  rose  color,  which  rapidly  becomes  purple, 
violet,  and,  lastly,  brownish-red,  and  that  ammonia  added  at  this  last  juncture 
increases  the  brownness.  It  is  no  longer  tne  same  when  a  mixture  of  a  drop 
of  phenol  and  a  drop  of  aniline  is  submitted  to  the  action  of  solution  of  chlo- 
rine. A  permanent  rose-red  is  obtained,  which  may  be  turned  to  a  blue  either 
by  ammonia  or  by  the  alkalies  or  alkaline  carbonates.  Acids  restore  the  ori- 
ginal redness.  The  author  concludes  that  there  exists  a  phenate  of  pheuyla- 
min ;  that  the  new  body  produced  in  the  above  reaction  is  a  red  acid,  forming 
blue  salts;  the  erythrophenate  of  soda  may  be  produced  by  causing  hypochlo- 
rite of  soda  to  act  upon  the  mixture  of  phenol  and  aniline.  The  blue  thus 
formed  is  remarkable  tor  its  purity  and  extraordiuay  tinctorial  power.  If  two 
drops  of  the  mixture  of  phenol  and  aniline  be  added  to  2  litres  of  water,  and 
then  treated  with  hypochlorite,  the  blue  in  an  hour  or  two  becomes  so  intense 
that  it  could  be  recognized  even  in  4  litres  of  water.  This  reaction  may  be 
useful  in  toxicological  researches  either  for  aniline  or  phenol.  The  purity  and 
permanence  of  the  blue  might  render  it  fit  for  the  uses  of  the  dyer,  but  it  will 
not,  bear  steaming.  The  extreme  facility  with  which  it  is  reddened  by  the  fee- 
blest acids  is  likewise  an  objection.  In  this  respect  it  far  exceeds  litmus. — 
Chem.  N&ws,  July  25,  from  Bull,  >Soc.  Chun,  de  Paris. 
$|ja:maccuucal  dDaliegea  M  ^mtmtwu. 
The  Colleges  of  Pharmacy  in  the  United  iStates  commence  their  regular 
■courses  with  the  beginning  of  October,  except  the  California  College,  which, 
as  we  stated  iu  our  iast  issue,  opened  its  first  course  in  July  last.  As  far  as 
we  can  learn,  there  appear  to  be  good  prospects  for  full  classes  in  all  the  col- 
leges, and  it  is  to  be  hoped  that  with  the  beginning  of  the  cooler  season  new 
energy  may  be  infused,  not  only  into  the  students  who  come  to  listen  to  the 
teachings  of  their  professors,  but  likewise  into  those  who  are  considered  mem- 
bers of  the  pharmaceutical  profession. 
