Am.  .Jour.  Pharm.  / 
March '1, 1872.  $ 
Pharmaceutical  ■  Colleges,  etc. 
129 
the  drying  dish)  had  a  strong  smell  of  ozone,  or  active: oxygen.  A 
couple  of  years  afterwards,  on  again  making  iodic  acid,!  this  observa- 
tion recurred  to  my  mind,  and  I  carefully  tested  theair  in  the  jar 
during  the  evaporation  ;  no  trace  of  ozone  could  be  detected  until  the 
acid  began  to  crystallize,  When  the  smell  of  ozone  became  immediately 
perceptible,  and  all  the  usual  teats  for  that  body  succeeded  perfectly. 
During  the  last  month  I  have  had  occasion  to  convert  two  ounces 
of  iodine  into  iodic  acid,  and  exactly  the  same  result  has  been  ob- 
served. The  acid  usually  solidifies  to  opaque  verrucose  masses  ;  but, 
on  this  occasion,  the  crystals  formed  were  clear  and  brilliant.  The 
solution  had  in  this,  as  in  all  the  former  cases,  been  boiled  down  to 
thin  syrup,  so  that  no  trace  of  chlorine,  or  nitric  acid.,  could  possibly 
have  remained  to  act  on  tlie  ozone  paper.  The  air  in  the  jar  was 
tested  from  day  to  day,  both  by  the  smell,  and  the  action,  of  iodized 
starch  paper.  Even  when  a  few  crystals  began  to  form  no  change 
was  noticed,  but  when  the  crystallization  set  in  fully  the  evolution  of 
ozone  was  most  remarkable,  the  strong  smell  being  quite  character- 
istic, entirely  different  from  that  of  chlorine  or  nitric  acid* 
I  am  quite  unable  to  account  for  this  ozonification  of.  the  air  (or 
oxygen)  over  crystallizing  iodic  acid.  My  friend,  Mr.  Sterry  Hunt, 
has  suggested  that  it  may  arise  from  a  partial  deoxi.dati.on  similar  to 
that  which  produced  ozone  when  hypermanganates  are  decomposed, 
as  observed  by  him  and  other  chemists.  As  the  crystallizing  acid 
remains  perfectly  white,  either  opaque  or  transparent,  and  as  the 
lower  oxides  of  iodine  are  of  a  yellow,  or  even  brown  color,  accord- 
ing to  Millosi,  I  cannot  accept  this  explanation,  and  even  if  it  were 
true,  the  phenomenon  would  be  equally  unintelligible — a  reduction 
taking  place  during  crystallization.  I  can  offer  no  explanation  of  the 
simple  fact  that  air  over  crystallizing  pure  iodic  acid,  becomes  ozon- 
ized, but  I  think  that  the  observation  seems  to  offer  a  wide  field  for 
further  experiments,  which  I  have  unfortunately  not  the  time  to  carry 
out. — Canadian  Pharm  Journ.,  Jan.,  1872. 
ijmrmaMtiai  Colkps  anir  ^mtmiimL 
Philadelphia  College  of  Pharmacy.— The  annual  commencement  will  take 
place  on  the  evening  of  March  15th,  at  the  Academy  of  Music;  the  valedictory 
will  be  delivered  by  Professor  Maisch. 
The  Board  of  Trustees  have  resolved  to  assist  the  local  committee  of  the 
American  Medical  Association,  which  will  meet  in  this  city  on  May  7th  next, 
in  their  endeavor  to  get  up  an  exhibition  of  objects  of  interest  to  the  medical 
profession.  The  committee  of  the  College  desire  for  this  purpose  mainly  speci- 
mens of  new  or  rare  drugs,  medicinal  chemicals  and  pharmaceutical  prepara- 
tions ;  nostrums  or  secret  preparations  will  not  be  accepted.  Offers  of  suita. 
ble  articles  are  solicited  for  this  exhibition  during  the  month  of  March  Or  early 
