Am.  Jour.  Pharm. ) 
September,  1920.  ) 
Concentrated  Milk  Products. 
659 
Dr.  L.  Emmett  Holt  ("Diseases  of  Infancy  and  Children,"  1916, 
159)  states  that:  "Evaporated  milk  requires  the  same  modifica- 
tion (for  infant  feeding)  as  ordinary  cow's  milk.  For  routine  use, 
it  should  be  diluted  with  from  eight  to  twelve  parts  of  water  and 
sugar  added.  *  *  *  *  It  is  a  sterile  cooked  milk.  Some 
childreri  thrive  upon  it  who  cannot  so  well  digest  either  raw  milk 
of  the  same  percentage  composition  or  even  freshly  pasteurized  milk. 
It  should  not  be  continued  as  the  sole  food  when  good  fresh  cow's 
milk  can  be  obtained." 
One  of  the  best  known  brands  of  evaporated  milk,  can  marked 
"net  weight  i  pound,"  has  upon  its  label  the  following  statement: 
"By  adding  one  part  of  water  to  one  part  of  the  contents  of  this  can, 
a  resulting  milk  product  will  be  obtained  which  will  not  be  below 
the  legal  standard  for  whole  milk.  Presumably,  parts  by  volume 
are  meant,  not  parts  by  weight. 
On  examining  this  evaporated  milk,  I  found  that  it  had  a  specific 
gravity  of  about  1.07,  and  one  tablespoonful  weighed  about  256 
grains.  Therefore,  one  tablespoonful  of  the  evaporated  milk  mixed 
with  one  tablespoonful  of  water  represents,  practically,  53  per  cent, 
by  weight  of  evaporated  milk ;  with  6  tablespoonf uls  of  water  repre- 
sents 15.75  pGi"  cent,  by  weight;  with  12  tablespoonfuls  of  water 
represents  8 . 5  per  cent  by  weight ;  with  1 8  tablespoonfuls  of  water 
represents  6  per  cent,  by  weight. 
With  these  factors,  the  actual  percentages  of  the  food  elements 
in  the  different  dilutions  measured  by  the  tablespoonful  can  be 
readily  ascertained. 
Evaporated  milk  does  not  "heap"  on  the  tablespoon  like  con- 
densed milk  and,  therefore,  does  not  bulk  so  large.  One  fluid  ounce 
of  evaporated  milk  (sp.  gr.  i  .07)  weighs  about  488  grains  and  mixed 
with  an  equal  volume  of  water  represents,  practically,  51.7  per  cent, 
by  weight  of  evaporated  milk,  with  6  fluid  ounces  of  water  repre- 
sents 15  per  cent,  by  weight,  with  12  fluid  ounces  of  water  repre- 
sents 8  per  cent,  by  weight,  with  18  fluid  ounces  of  water  represents 
5 . 5  per  cent,  by  weight. 
In  making  evaporated  milk  dilutions  for  infant  feeding,  the  grad- 
uated measure  should  be  used  instead  of  the  tablespoon;  it  is  more 
accurate. 
DRIED  MILKS. 
Dried  milk  is  milk  deprived  of  its  water,  or  the  milk  solids,  and 
represents  about  eight  times  its  weight  of  milk.    It  is  a  yellow. 
