ON  THE  HYPOPHOSPHITES  OF  IRON. 
311 
ON  A  FLUID  EXTRACT  OF  BUCHU. 
To  the  Editor  of  the  American  Journal  of  Pharmacy. 
Dear  Sir, — Having  had  many  calls  by  physicians  for  a  pre- 
paration of  buchu,  in  which  all  the  medicinal  properties  of  the 
leaves  should  be  obtained  in  a  concentrated  form  and  of  reliable 
strength,  many  experiments  have  proved  that  a  preparation 
made  according  to  the  subjoined  recipe  will  give  more  general 
satisfaction  than  any  heretofore  in  use  : 
Bxtr  actum  Buchu,  fluidum. 
Jfc. — Fol.  Barosmse  Crenatae,  alxxx.  (coarsely  ground.) 
Alcohol,  85  per  ct.  q.  s. 
Ether.  q.  s. 
Potassse  Carbonatis,  ^ii. 
To  the  buchu  leaves,  placed  in  a  close  covered  vessel,  add  4  pints 
of  alcohol,  95  per  ct.,  mixed  with  40  oz.  of  ether,  allow  them  to 
macerate  12  hours,  transfer  to  a  suitable  displacement  apparatus, 
and  pour  on  alcohol  until  80  oz.  have  passed  ;  set  this  aside  and 
allow  the  ether  to  evaporate  spontaneously  •  continue  the  per- 
colation till  11  pints  have  been  obtained ;  from  this  distil  9  pints, 
(at  a  heat  not  exceeding  200° ;)  to  the  remainder  add  the  ethe- 
real solution,  and  continue  the  distillation  (if  necessary)  until  the 
residue  measures  80  fluid  oz. ;  to  this,  whilst  warm,  add  the  car- 
bonate of  potash,  (to  dissolve  the  oleo-resinous  matter  thrown  out 
of  solution  during  the  evaporation,)  and  filter.  The  dose  gener- 
ally is  3ss.  repeated  several  times  a  day. 
Respectfully,  yours, 
J.  Henry  Harte. 
Richmond,  June  14^A,  1858. 
ON  THE  HYPOPHOSPHITES  OF  IRON. 
By  William  Procter,  Jr. 
In  the  February  number  of  this  Journal,  I  published  a  paper 
on  the  medicinal  hypophosphites  recommended  by  Dr.  Churchill, 
as  valuable  agents  in  phthisis,  and  at  the  same  time  brought  for- 
ward the  hypophosphite  of  sesquioxide  of  iron  as  an  ingre- 
dient in  a   compound  syrup  of  these  salts,  the  formula  for 
