"^"^  Nov?i87t""'}  Pharmaceutical  Colleges  and  Associations,  517 
Mr.  Bullock  spoke  of  the  difference  in  cologne  spirit  arising  from  the  use  of  dif- 
ferent lots  of  liquor,  the  odor  being  sometimes  difficult  to  remove.  The  method  of 
Temoving  fusel  oil  by  permanganate,  which  was  practiced  40  years  ago,  and  for 
which  a  patent  was  granted  to  Mr.  Atwood,  in  this  country,  was  alluded  to ;  by 
this  process  the  fusel  oil  is  destroyed  and  its  repulsive  odor  replaced  by  an  agreeable 
^ne. 
Allen  Shryock  read  a  paper  on  mixture  of  gum  arable  and  mixture  of  extract  of 
liquorice  (see  p.  496). 
Professor  Maisch  has  had  a  solution  of  gum  arable  in  glycerin  on  hand  for  six  or 
seven  years,  which  was  yet  in  good  condition  ;  he  referred  also  to  the  use  of 
salicylic  acid  for  preserving  mucilage,  as  proposed  by  David  Preston  (see  p.  495). 
Professor  Remington  said  salicylic  acid  had  been  used  for  the  preservation  of 
many  preparations,  and  that  he  had  found  it  to  answer  an  excellent  purpose  with  juices 
of  raspberry  and  strawberry. 
Mr.  Bullock  remarked  much  had  been  said  about  this  acid  retarding  different 
kinds  of  fermentation,  an  important  question  was,  does  it  retard  the  peptic  fermen- 
aation?    (See  page  522.) 
Professor  Remington  related  an  instance  in  which  salicylic  acid  dusted  upon  the 
surface  of  wounds,  could  not  be  endured  from  the  irritation  produced,  while  in  solu- 
tion the  difficulty  did  not  arise. 
W.  B.  Webb  inquired  as  to  what  was  understood  in  prescription  by  solution  of 
salicylic  acid,  and  whether  the  saturated  solution  in  water  should  then  be  dispensed. 
He  prepares  it  by  heating  the  water  and  acid  together  in  a  closed  vessel ;  it  will  then 
contain  about  20  grains  in  6  fluidounces. 
C.  L.  Mitchell  spoke  of  the  purification  of  crude  salicylic  acid  as  obtained  in  the 
process  of  Kolbe  after  filtration  through  animal  charcoal  5  its  separation  requires  the 
addition  of  muriatic  acid,  and  it  is  a  curious  fact  that  its  solubility  in  water  decreases 
with  its  purity. 
The  Chairman  announced  that  Dr.  Hunt  had  made  some  improvements  on  the 
'Oxyhydrogen  stereopticon,  and  had  expressed  a  willingness  to  give  an  exhibition  to 
the  members.  A  vote  of  thanks  was  tendered  to  Dr.  Hunt,  and  an  invitation  ex- 
tended to  select  an  early  day  for  the  entertainment. 
The  following  motions  were  carried  :  That  the  next  meeting  be  held  in  the  even- 
ing at  8  o'clock  5  and 
That  Charles  Bullock  be  invited  to  deliver  a  lecture. 
Mr  Bullock  selected  as  the  subject  "  Ozone." 
Adjourned.  William  McIntyre,  Registrar. 
PHARMACEUTICAL  COLLEGES  AND  ASSOCIATIONS. 
Philadelphia  College  of  Pharmacy. — On  the  evening  of  October  26th,  Dr. 
J,  G.  Hunt  gave  an  interesting  exhibition  of  the  stereopticon  and  oxyhydrogen 
microscope.    The  photographs  shown,  many  of  which  were  handsomely  colored. 
