AMERICAN  PHARMACEUTICAL  ASSOCIATION. 
407 
shall  be  practical  and  economical,  by  which  the  whole  of  the  Aloin  in  aloes 
may  be  rendered  available. 
Accepted  by  Wm.  Procter,  Jr.,  Philadelphia,  Pa. 
Query  20. — Does  the  Colchicia  of  JohnE.  Carter  (Amer.  Jour.  Phar. 
vol.  xxx.  208)  exist  in  the  seeds  of  Colchicum  autumnale,  and  can  it  be 
isolated  from  either  source  for  use  in  medicine  with  advantage? 
Accepted  by  C.  Lewis  Diehl,  of  Louisville,  Ky. 
Query  21. — The  seeds  of  Ricinus  communis  are  much  more  purgative 
in  their  effects  than  the  expressed  oil.  To  what  principle  does  this  power 
belong,  and  what  relation  does  it  bear  to  the  alkaloid  Ricinin  of  Prof. 
Tusson  ? 
Referred  to  Prof.  Wadgymar,  of  St.  Louis,  Mo. 
Query  22. — What  are  the  physiological  properties  of  the  leaves  of  Ri- 
cinus communis,  and  what  constituent  renders  them  active? 
Accepted  by  F.  V.  Heydenreich,  of  Brooklyn,  N.  Y. 
Query  23. — The  leaves  of  Podophyllum  peltatum  are  said  to  be  poison- 
ous (U.  S.  Disp.)  Is  this  true  ?  Are  they  cathartic,  and  to  what  princi- 
ple is  their  activity  due  ? 
Accepted  by  Saml.  P.  Duffield,  Ph.  D.,  of  Detroit,  Mich. 
Query  24. — What  kinds  of  Tar  were  used  as  substitutes  for  Carolina 
Tar  during  the  late  war  ;  and  from  what,  how,  and  where  prepared  ? 
Accepted  by  Saml.  S.  Garrigues.  of  East  Saginaw,  Mich. 
Query  25. — Is  the  Sennin  of  Robert  Rau  (see  Amer.  Jour.  Pharm., 
May,  1866,  p.  193)  the  true  active  principle  of  Senna,  or  must  its  cathar- 
tic power  be  attributed  to  another  principle  ? 
Accepted  by  Pobt.  G.  Kennedy,  of  Cleveland,  Ohio. 
Query  26. — It  is  'alleged  by  Mr.  George  Johnson  [Pharm.  Jour.,  Oct., 
1865,  p.  179)  that  the  deposit  in  wine  of  Ipecac  contains  an  appreciable 
quantity  of  Emetia  in  an  insoluble  state,  contrary  to  the  experiments  of 
Mr.  Roberts  (see  Proc.  Amer.  Pharm.  Assoc.,  1859,  p.  281).  Is  this  true, 
and  how  can  it  be  demonstrated  ? 
Accepted  by  G.  F.  H.  Marlcoe,  of  Boston,  Mass. 
Query  27. — Does  the  precipitate  characteristic  of  the  tincture  and 
vinegar  of  Sanguinaria  contain  any  of  its  alkaloid  ;  and  if  so,  how  demon- 
strated, and  what  percentage  ? 
Accepted  by  Josiah  B.  Frost,  of  Ypsilanti,  Mich. 
Query  28. — Does  the  insoluble  matter  filtered  from  Fluid  Extract  of 
Yeratrum  viride,  in  the  process  of  the  U.  S.  Pharmacopoeia,  contain  any 
of  the  sedative  resin-like  alkaloid  of  Charles  Bullock  ;  and  if  so,  how  may 
the  process  be  modified  to  prevent  its  loss  ? 
Accepted  by  Alfred  Mellor,  of  Philadelphia,  Pa. 
Query  29. — May  not  Extractum  Conii  and  Extractum  Conii  Alcoholi- 
cum  U.  S.  P.  be  rendered  more  permanent  and  stronger  by  the  addition 
of  an  acid  before  evaporation, — as  the  acetic  or  sulphuric? 
Accepted  by  Edward  C.  Jones,  of  Philadelphia,  Pa. 
