ARTIFICIAL  VICHY  WATER. 
405 
until  a  transparent,  reddish-brown  solution  is  obtained,  avoiding 
much  excess.  This  is  then  filtered,  if  necessary,  mixed  with  the 
syrup  of  orange  flowers  and  sufficient  simple  syrup  to  make  the 
whole  measure  fourteen  fluid  ounces.  The  syrup  has  a  slightly 
ammoniacal  saline  taste,  not  ferruginous,  a  light  reddish-brown 
color,  and  may  be  given  in  teaspoonful  or  dessertspoonful  doses, 
according  to  circumstances,  in  a  little  water. 
According  to  Gmelin,  (Handbook,  Vol.  V,  p.  229,)  pyrophos- 
phate of  sesquioxide  of  iron  is  a  sesqui-salt,  having  the  formula 
of  2Fe2  O3,  3bP05-f  9  Aq.  Consequently  it  is  necessary  to  use 
three  equivalents  of  pyrophosphate  of  soda,  3  (Na2  bPO5)  and 
two  equivalents  of  ter-sulphate  of  iron,  2(Fe2  O3,  3S03)  to  form 
one  equivalent  of  the  salt. 
It  may  be  well  to  remark  that  pyrophosphate  of  soda  is  easily 
made  from  ordinary  medicinal  phosphate  of  soda,  by  first  drying 
off  its  water  of  crystallization,  and  then  heating  it  to  redness  and 
fusion.  The  solution  of  persulphate  of  iron  is  made  as  directed 
in  the  U.  S.  Pharmacopoeia  for  the  purpose  of  precipitating 
hydrated  sesqui-oxide  of  iron. 
EAU  DE  VICHY— ARTIFICIAL  VICHY  WATER. 
By  William  Procter,  Jr. 
About  eighteen  months  ago  Dr.  John  Bell,  of  Philada.,  (who 
has  made  the  mineral  waters  a  special  study,)  requested  me  to 
make  for  him  a  dozen  bottles  of  artificial  Vichy  water  by  the 
formula  of  Soubeiran.  Since  then  I  have  prepared  many  dozens 
for  other  persons  at  the  instance  of  Dr.  Bell.  Finding,  however, 
that  its  cost  in  material  and  trouble  did  not  enable  me  to  furnish 
it  at  a  price  to  warrant  its  free  consumption,  not  having  com- 
mand of  a  carbonic  acid  apparatus,  for  generating  and  for  bottling 
under  pressure,  I  suggested  to  Dr.  Bell  that  he  should  induce 
Mr.  Roussell,  or  other  manufacturer  of  carbonic  acid  water,  to 
engage  in  its  preparation.  Subsequently  Dr.  Bell  suggested  this 
idea  to  Mr.  Frederick  Brown  of  this  city,  who  now  prepares  it, 
as  I  have  learned,  through  an  editorial  notice  in  the  North  Ameri- 
can Medico-Chirurgical  Review. 
The  attention  of  the  medical  profession  having  thus  been  at- 
tracted to  the  artificial  Vichy  water,  it  is  proper  that  a  notice  of 
