536  American  Pharmaceutical  Association,        { ^"oc  "^iJss 
A  paper  by  Prof.  Lloyd,  entitled  Precipitates  in  fluid  extracts^  tinctures^ 
etc.,  was  read  in  continuation  of  papers  read  at  two  previous  meetings. 
The  present  paper  discusses  the  formation  of  precipitates,  or  rather  the 
separation  of  solid  or  liquid  matter  upon  or  above  the  surface  of  the  liquids 
named.  In  connection  with  this  subject  are  considered  the  evaporation  of 
liquids  below  their  boiling  points  and  in  open  and  in  partly  filled  bottles, 
the  disturbance  of  the  solvent  power  of  the  remaining  solution  in  conse- 
quence thereof,  the  capillary  attraction  by  the  film  deposited  on  the  upper 
edge  of  the  liquid,  the  effect  of  partial  or  one-sided  heating  and  other  influ- 
ences upon  volatile  liquids.  The  importance  of  these  investigations  was 
forcibly  shown  by  the  results  of  an  experiment,  in  which  a  bottle  contain- 
ing potassium  iodide  was  half-filled  with  alcohol,  hermetically  closed,  and 
moderately  heated  on  one  side,  when  after  some  time  an  incrustation  of  salt 
was  found  above  the  liquid  which  for  solution  would  have  required  1}  times 
the  entire  amount  of  alcohol  within  the  bottle.  Dr.  Rice  considered  these 
observations  and  results  not  only  as  being  very  interesting, but  likewise  as 
being  of  great  importance  in  ex{>laining  scientific  facts.  Mr.  Shinn  thought 
that  the  pharmaceutical  moral  conveyed  could  be  expressed  by  "shake  the 
bottle."  Mr.  Halberg  referred  to  the  eflfect  of  light,  having  observed  that 
liquids  containing  chlorophyll  and  tannin  form  such  deposits  more  readily 
when  exposed  to  light  than  in  the  dark.  Dr.  Ziegler  suggested  that  such 
precipitates  might  be  occasioned  not  solely  by  deposition  from  solution,  but 
also  by  a  chemical  change  more  or  less  influenced  by  light. 
Mr.  Shinn  read  the  report  of  the  Committee  on  the  President's  Address 
and  presented  a  series  of  resolutions.  The  subjects  of  a  national  pharmacy 
act  and  of  elevating  the  condition  of  apothecaries  in  the  army  and  navy 
were  referred  to  the  Committee  on  Legislation,  and  the  Council  was  charged 
with  the  appointment  of  suitable  delegates  to  the  International  Pharma- 
ceutical Congress  to  be  held  at  Brussels  ;  with  taking  proper  action  against 
the  sale  by  Government  of  drugs  and  medicines  condemned  by  drug  exam- 
iners, and  with  the  appointment  and  supervision  of  a  committee  of  arrange- 
ments and  entertainment.  The  suggestions  of  the  present  entertainment 
committee  were  likewise  referred  to  the  Council  who  was  also  authorized 
to  accept  or  decline  any  invitation  which  may  be  extended  to  the  Associa- 
tion for  its  entertainment  during  the  time  of  meeting. 
Mr.  Thompson  offered  the  following  resolution,  seconded  by  Mr.  Vogeler^ 
which  was  adopted : 
Resolved,  That  the  National  Museum  is  hereby  declared  to  be  the  deposi- 
tory of  specimens  of  the  American  Pharmaceutical  Association ;  that  all 
specimens  of  materia  medica,  chemistry  and  pharmacy  coming  into  posses- 
sion of  this  Association  shall  be  deposited  in  said  museum  and  be  designated 
as  the  Collection  of  the  American  Pharmaceutical  Association;  that  our 
members  are  recommended  to  contribute  towards  the  completion  of  the 
collection,  and  that  a  committee  of  three  be  appointed  to  receive  specimens 
for  this  collection. 
The  subject  of  badges  to  be  used  at  the  annual  meetings  was  referred  to 
the  Council,  and  the  receiving  by  Council  of  credentials  of  delegates  from 
the  Missouri  and  Rhode  Island  Pharmaceutical  Associations  was  reported^ 
after  which  the  Association  adjourned  until  3  o'clock  in  the  afternoon. 
