Jc^is^sr™' }    American  Pharmaceutical  Association.  445 
the  means  for  imparting  that  information  (see  ''Amer.  Journ.  Pharm.,'^ 
1875,  p.  281). 
A  paper  by  Chas.  Bullock  gave  valuable  practical  information  on 
the  preparation  of  medicinal  bromides  and  hydrobromates. 
In  an  essay  on  "  Calabar  bean  and  its  medicinal  preparations,"  Mr. 
G.  W.  Kennedy  gave  formulas  for  the  tincture,  solid  and  fluid  extract, 
calabarized  paper  and  calabarized  gelatm. 
Mr.  R  Rickey,  of  Trenton,  N.  J.,  in  a  paper  on  "  Cinchona  alka- 
loids," stated  that  a  mixture  of  the  same,  in  about  the  proportion  in 
which  they  exist  in  the  various  barks,  could  be  readily  prepared  ;  but 
he  advocated  that  such  mixtures  be  made  from  the  pure  alkaloids  or 
their  salts  upon  the  presciption  of  physicians  written  with  the  view  of 
meeting  the  indications  of  each  case. 
A  paper  by  L.  D.  Drury,  of  Boston,  gave  some  figures  showing  the 
deficiency  of  quinia  in  the  citrate  of  iron  and  quinia  of  two  or  three 
manufacturers  ;  the  paper  was  subsequently  referred  to  the  author  for 
further  elaboration. 
Mr.  Chas.  Rice  had  instituted  a  number  of  experiments  upon  the 
asserted  insufficient  solubility  of  commercial  sulphate  of  morphia,  but 
all  gave  a  negative  result. 
An  invitation  was  received  from  Prof.  Sargent  of  the  Percy  Institu- 
tion of  Harvard  University,  inviting  the  members  to  visit  the  botanical 
garden  at  Cambridge.    The  invitation  was  accepted  with  thanks. 
On  motion,  the  Association  adjourned  until  the  following  morning. 
Sixth  Session — Friday  mornings  September  lOth. 
The  reading  and  approval  of  the  minutes  was  followed  by  an  invita- 
tion from  Mr.  Edward  Burgess,  Secretary  of  the  Boston  Society  of 
Natural  History,  to  visit  the  building  and  examine  the  collections  of 
the  Society,  which  was  accepted  with  thanks. 
Prof.  Bedford  read  three  papers  "  On  the  strength  of  commercial 
mineral  acids,"  "  On  the  purity  of  ether  of  commerce  "  and  "  On  the 
impurities  in  bicarbonate  of  soda."  The  percentage  of  impurities  in 
the  latter  case  was  found  to  be  small,  the  order  of  purity  being  as  fol- 
lows :  Natrona,  Greenwich,  Alhusen's,  Schering's,  French,  Chance's^ 
Jarrow's,  Kidder's,  Dwight's  and  Church's. 
The  following  volunteer  papers  were  read  at  this  session  :  "  On  a 
now  method  of  packing  herbs,"  by  Dr.  A.  W.  Miller  ;  "  On  cod-liver 
oil,"  by  Mr.  Marvin  ;  "  On  the  preparation  of  india  rubber  from  milk- 
