AMERICAN  PHARMACEUTICAL  ASSOCIATION. 
423 
Prof.  Parrish  called  attention  to  the  result  of  his  filtering 
experiment  at  the  previous  session,  and,  on  motion,  it  was  voted 
that  he  furnish  the  Executive  Committee  with  a  drawing  and 
description  of  the  filtering  apparatus  for  publication  in  the 
proceedings. 
Mr.  A.  B.  Taylor  exhibited  specimens  of  fluid  extract  of 
Rhubarb,  and  fluid  extract  of  Cinchona,  preserved  by  means 
of  glycerin,  as  recommended  in  his  paper  read  at  the  second 
session. 
Mr.  Maisch,  in  answer  to  Query  21,  read  a  paper  on  the  poi- 
sonous principle  of  Rhus  toxicodendron.  The  writer  disproves 
the  assertion  of  Dr.  Khittel,  that  the  poison  of  this  plant  is  due 
to  an  alkaloid  (ammonia  being  the  only  volatile  alkaloid  present), 
and  shows  that  its  activity  is  due  to  toxicodendric  acid,  an  acid 
peculiar  to  this  plant.  Mr.  Maisch  exhibited  a  specimen  of 
the  aqueous  solution  of  the  acid,  and  crystals  of  toxicodendrate 
of  baryta. 
Query  1,  in  regard  to  the  seeds  of  Cimicifuga,  being  called 
up,  was  answered  by  Edward  C.  Jones,  of  Philadelphia,  in  a 
paper  which  was  referred. 
Mr.  Ebert,  of  Chicago,  read  his  paper  on  the  Oil  of  Amber 
and  its  sophistication,  in  lieu  of  the  answer  to  Query  2.  Several 
interesting  specimens  of  amber  products,  including  the  pure  crude 
oil,  and  the  pure  rectified  oil,  succinic  acid,  and  some  adulterated 
oil  of  amber  were  shown  by  Mr.  Ebert,  who  found  that  the  oil  cost 
him  $1.50  per  ounce,  when  rectified,  the  amber  costing  75  cents 
per  pound,  whilst  commercial  oil  is  quoted  at  $1.50  per  pound. 
Mr.  Bedford  stated  that  his  experiments  to  answer  Query 
9th  were  not  completed,  and  he  desired  to  have  the  subject  con- 
tinued for  another  year.  He  also  stated  that  Mr.  Higgins,  who 
should  have  answered  the  Query  on  Pumpkin  Seeds,  had  re- 
moved to  Jacksonville,  Florida.  On  motion  Query  10  was 
dropped. 
Query  11th — Relative  to  the  most  convenient  form  of  ap- 
paratus for  regulating  temperature  below  212°,  as  required  in 
certain  Pharmacopoeial  processes,  was  now  answered  by  Mr.  Bed- 
ford in  a  paper  which  he  illustrated  with  apparatus. 
Query  24th. — Referring  to  the  therapeutic  properties  of 
