Of  this  solution  stir  10  drops  into
I  pint  of  boiling  water,  and  fix  the
color  contained  in  this  fluid  on  a  close
white  woollen  cloth  of  about  2  square
inches.  Then  remove  every  trace  of
acid  by  washing  with  clean  cold  water.
After  the  cloth  has  been  wrung  out
place  it  in  a  solution  of  1  ounce  of
crystallized  soda  in  3^  pints  of  boiling
water,  draw  off  the  fluid,  and  dissolve
in  it  2k  ounces  of  tartaric  acid.  If  the
feathers  are  to  be  dyed  pearl  blue,  dis-
solve 1  ounce  of  alum  in  2  gallons  of
water,  add  to  this  55  gallons  of  indigo
solution,  place  the  feathers  in  the  bath,
and  heat  by  placing  the  tub  in  boiling
water.  As  soon  as  the  feathers  have
acquired  the  desired  color  they  are
dried  without  washing.  For  darker
colors  take  more  indigo  solution.
To  Dye  with  Indigo  Red.  A  light
blue  color  is  produced  by  placing  the
feathers  in  a  solution  of  \  ounce  of
tartaric  acid,  and  1  ounce  of  indigo
red  in  If  pints  of  water.  By  adding  a
little  alum  to  the  solution  the  color  be-
comes more  durable.
