AFebJruaryPf9aor8m'}    Poison  Ivy  Fruit — Share- Holding  to  Stop.  93 
POTSON  IVY  FRUIT. 
By  A.  B.  Stevens. 
In  an  article  on  Poison  Sumac  (American  Journal  of  Pharmacy, 
79,  522),  Mr.  Warren  and  the  writer  referred  to  Pfaff's  statement 
that  he  found  the  poison  in  the  fruit  of  the  poison  ivy  and  poison 
sumac,  and  declared  our  belief  that  he  must  have  employed  fruit 
collected  in  the  green  state,  as  we  had  repeatedly  examined  the  ripe 
fruit  of  both  species  and  each  time  were  unable  to  find  poison. 
Since  writing  the  above  we  have  examined  two  samples  of  mature, 
but  unripe  fruit  of  poison  ivy,  and  both  were  poisonous. 
A  physician  once  asked  if  poison  ivy,  growing  in  the  city,  was 
poisonous.  In  this  connection  it  is  interesting  to  note  that  one  of 
the  above  specimens  grew  in  Weehawken,  N.  J.,  near  the  dueling 
grounds  of  Hamilton  and  Burr,  the  other  in  the  Old  Dutch  Ceme- 
tery in  Tarrytown-on-the-Hudson. 
By  some  oversight  a  part  of  the  original  copy,  containing 
acknowledgements,  was  omitted  and  we  take  this  opportunity  to 
express  our  thanks  to  Frederick  Stearns  and  Co.  for  their  generosity 
in  maintaining  a  fellowship  in  the  School  of  Pharmacy,  University  of 
Michigan,  which  made  part  of  this  work  possible,  and  also  to  Adolph 
Ziefle  for  continued  assistance,  especially  in  the  collection  of  the  latex. 
In  the  illustration,  p.  506,  Mr.  Ziefle  appears  on  the  right  and  Mr. 
Warren  on  the  left. 
SHARE-HOLDING  IN  NOSTRUM  COMPANIES  BY  PHYSI- 
CIANS TO  STOP. 
"  Section  4  of  Article  I  of  the  By-Laws  of  the  Philadelphia 
County  Medical  Society  provides  :  *  Any  physician  who  shall  pro- 
cure a  patent  for  a  remedy  or  for  an  instrument  of  surgery,  or  who 
sells  or  deals  in  patent  medicines  or  nostrums,  or  who  shall  give  a 
certificate  in  favor  of  a  patented  or  proprietary  remedy  or  patent 
instrument,  or  who  shall  enter  into  an  agreement  with  an  apothe- 
cary to  receive  pecuniary  compensation  or  patronage  for  sending 
his  prescriptions  to  that  apothecary,  shall  be  disqualified  from 
becoming  or  remaining  a  member.' 
"  The  holding  of  shares  of  stock  in  a  company  making  or  deal- 
ing in  patented  or  secret  medicines  is,  therefore,  incompatible  with 
membership  in  the  Philadelphia  County  Medical  Society.  This 
