EXAMINATION  OF  THE  SULPHATE  OF  QUINIA.  505 
gallons  of  the  water,)  have  it  properly  dissolved  in  water  accord- 
ing to  the  directions,  and  have  the  resulting  water  carefully 
analysed  by  any  well-known,  competent  and  unbiassed  chemical 
analyst.  Should  such  a  chemist,  after  careful  examination, 
declare  and  shew,  under  his  own  proper  name,  that  this  water 
does  not  contain  the  ingredients  of  the  Congress  Spring  water  of 
Saratoga,  and  in  the  due  proportion,  it  will  then  be  more  in  place 
for  the  proprietors  to  come  forth  with  assertions  or  insinuations, 
which,  in  their  application  to  the  present  subject,  appear  to  be 
contradictory  to  the  chemical  knowledge  and  experience  of  the 
nineteenth  century. 
The  medicinal  effect  of  the  solution  of  the  "  Saratoga  Salt," 
the  writer  has  thought  it  best  to  leave  in  the  hands  of  the  physi- 
cians, confining  himself  to  his  own  province  of  chemistry  and 
pharmacy.  But  it  may  be  well  to  say  that  the  experience  of 
several  of  our  eminent  practitioners  has  already  done  much  to 
confirm  the  identity  of  this  preparation  with  the  natural  water. 
Dr.  Thos.  H.  Yardley,  of  this  city,  speaks  on  this  subject  from 
personal  experience,  as  well  as  observation  in  his  practice,  in  the 
following  note,  which  he  permits  me  to  make  public : — 
"  I  have  myself  used,  and  have  been  in  the  habit  of  prescrib- 
ing, during  the  past  six  months,  «  Hodgson's  Saratoga  Salts  ' 
instead  of  the  bottled  Congress  Water.  I  believe  their  effects  are 
the  same  ;  and  the  facility  with  which  the  dry  Salts  may  be  car- 
ried, renders  them  a  very  valuable  remedy. 
Thos.  S.  Yardley." 
"  No  381  Arch  St..  9th  mo.  28th,  1855." 
EXAMINATION  OF  THE  SULPHATE  OF  QUINIA  OF  MESSRS. 
POWERS  &  WEIGHTMAN,  OF  PHILADELPHIA. 
By  Edward  R.  Squibb,  M.  D.,  U.  S.  N. 
Assistant  Director  U.  S.  Naval  Laboratory,  New  York. 
Mr.  Wm.  Procter,  Jr. 
Dear  Sir : — Some  of  the  main  points  in  my  late  paper  upon 
this  subject,  seem  to  have  been  so  badly  detailed  that  they 
altogether  escaped  the  attention  of  Messrs.  Powers  &  Weight- 
man.  Judging  from  your  editorial  remarks  upon  the  subject, 
these  must  also  have  been  entirely  overlooked  by  you,  and  pro- 
bably, therefore,  by  your  readers. 
