Am.  Jour.  Pharm. 
June,  1905. 
Correspondence. 
2QI 
Polychloral  {Polymerized  Chloral). — This  substance  is  obtained  by 
the  action  of  dehydrating  agents  on  chloral.  Polychloral  occurs  in 
white  crystalline  tasteless  masses,  slightly  soluble  in  cold  water  or  in 
cold  alcohol ;  readily  soluble  in  hot  water  or  in  hot  alcohol,  forming 
with  the  former  chloral  hydrate,  and  with  the  latter  chloral  alcohol- 
ate.  Heated  gradually,  polychloral  is  vaporized  without  melting. 
It  melts  at  1530  to  1 5 5 0  C. 
Polychloral  has  been  suggested  as  an  efficient  hypnotic.  It  may 
be  given  in  doses  from  0-75  to  2*00  grammes  three  times  a  day. 
Viferral  is  a  trade  name  for  a  product  chemically  identical  with 
polychloral,  but  made  under  a  patented  process,  using  pyridine  as 
the  dehydrating  agent.    (Vier.  Jahrs.f.  Prak.  Pilar.,  1905,  p.  26.) 
CORRESPONDENCE. 
AMERICAN  PHARMACEUTICAL  ASSOCIATION. 
Pfof.  Henry  Kraemer,  Editor  American  Journal  of  Pharmacy. 
Dear  Professor  Kraemer: — It  affords  me  pleasure  to  inform  you 
that  the  Fifty  Years'  Index  of  the  Proceedings  is  now  ready  for  de- 
livery, and  on  behalf  of  the  officers  and  members  of  the  American 
Pharmaceutical  Association  I  beg  to  ask  that  you  give  the  fact  ex- 
tended publicity  in  your  valued  Journal,  with  the  view  of  furthering 
the  use  of  the  book. 
I  am  enclosing  herewith  a  copy  of  the  preface  of  the  index  for 
your  guidance,  and  beg  to  add  that  all  orders  for  the  book  should 
be  addressed  to  this  office. 
Thanking  you  in  advance  for  the  favor, 
Very  truly  yours, 
Chas.  Caspari,  Jr. 
preface  to  the  fifty  years'  index  of  the  proceedings  of  the 
american  pharmaceutical  association. 
On  the  occasion  of  the  fiftieth  anniversary  of  the  organization  of 
the  American  Pharmaceutical  Association  in  1902,  the  preparation  of 
a  collective  index  of  the  first  fifty  volumes  of  Proceedings,  185 1  to 
1902,  inclusive  (none  having  been  issued  in  i86i),was  agreed  upon. 
The  manuscript  of  the  Collective  Index  was  prepired  under  the  di- 
rection of  the  General  Secretary  and  presented  at  the  meeting  held 
