AmA$I;imaTm'}  Distilled  Water.— Liniment  of  Soft  Soap.  187 
DISTILLED  WATER. 
Cincinnati,  March  6,  1896.— 
Editor  American  Journal  of  Pharmacy. 
Dear  Sir  : — In  my  article,  "  Distilled  Water,"  this  Journal,  Jan- 
uary number,  1896,  p.  1,  is  found  the  following  passage  : 
"  On  determining  the  amount  of  this  matter,  it  was  found  that 
ioo-ooo  c.c.  left  i-8  gramme  of  residue,  which  proved  to  be  dis- 
solved stone  and  constant.  Tucker1  gives  the  following  limits  of 
observed  residues  with  glass  condensers  : 
"  ioo-ooo  parts  of  water  left  from  2-20  to  23-00  parts  of  residue." 
It  was  an  oversight  to  put  in  the  words  "  with  glass  condensers," 
and  thus  inadvertently  make  Dr.  Tucker  responsible  for  the  asser- 
tion that  ioo-ooo  parts  of  such  distilled  water  contains  23  00  parts 
of  solids.  Dr.  Tucker,  in  his  paper,  clearly  states  that  most  of  the 
samples  of  water  consisted  of  impure  rain  water  or  mere  tap  water. 
My  object  in  referring  to  the  paper  of  Dr.  Tucker  was  to  show 
that  my  figure,  giving  the  amount  of  residue  (r8  gramme)  in  ioo-ooo 
parts  of  water  made  with  a  stone  still  and  worm,  was  lower  than 
the  lowest  in  the  commercial  samples  analyzed  by  Dr.  Tucker. 
The  reader  of  the  paper  would  unquestionably  perceive  that  Dr. 
Tucker  could  not  have  made  so  improbable  an  assertion  as  that 
23-00  parts  of  solids  could  be  present  in  ioo-ooo  parts  of  official 
distilled  water. 
Dr.  Tucker  (according  to  private  information  kindly  extended  to 
me)  regards  1  part  of  residue  in  100  000  parts  as  the  maximum 
amount  in  good  distilled  water,  made  with  glass  condensers. 
Respectfully, 
J.  U.  Lloyd. 
PREPARATION  OF  LINIMENT  OF  SOFT  SOAP._ 
By  C.  E.  Smith. 
This  liniment  may  be  made  by  a  simple  method,  which  accom- 
plishes the  formation  of  the  soap  and  of  the  liniment  at  the  same 
time,  and  gives,  in  addition,  a  product  of  more  uniform  strength 
than  is  possible  by  the  older  mode  of  preparation. 
1 "  The  Adulteration  of  Drugs."  A  lecture  delivered  before  the  Department 
of  Chemistry  of  the  Brooklyn  Institute  of  Arts  and  Sciences,  May  24,  1895,  by 
Willis  G.  Tucker. 
