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Study  of  Fruit  and  Vegetable  Colors. 
<  Am.  Jour.  Pharm 
X       July,  1905. 
RESULTS  OF  EXPERIMENTS  WITH  DYEING  TEST. 
Blackberry. — Dyes  wool  a  dull  pink  on  first  dyeing,  color  changes 
to  green  upon  applying  ammonia.  No  second  dyeing  can  be  ob- 
tained. 
Cherry  {black). — Same  as  blackberry. 
Cherry  (red). — Dyes  wool  a  very  light  pink  on  first  dyeing,  color 
changes  to  green  upon  applying  ammonia.  No  second  dyeing  can 
be  obtained. 
Cranberry. — No  appreciable  color  on  first  dyeing. 
Currant. — Same  as  cherry  (red). 
Elderberry. — Same  as  cherry  (red). 
Grape. — Same  as  blackberry. 
Huckleberry. — Same  as  blackberry. 
Plum. — Same  as  cherry  (red). 
Raspberry. — No  appreciable  color  on  first  dyeing. 
Strawberry. —Dyes  wool  very  faint  pink  on  first  dyeing.  Ammonia 
produces  no  change.    No  second  dyeing  can  be  obtained. 
Annatto. — Dyes  wool  yellow  in  first  dyeing.  Ammonia  produces 
no  change.    Second  dyeing  very  much  lighter. 
Beet  Juice. — No  appreciable  color  on  first  dyeing. 
Brazilwood. — Dyes  wool  yellow  6n  first  dyeing.  Ammonia 
changes  to  rose  purple.    Second  dyeing  very  faintly  yellow. 
Cochineal. — Dyes  wool  bright  red  on  first  dyeing.  Ammonia 
changes  to  deep  purple.    Second  dyeing  very  light  pink. 
Cudbear. — Dyes  wool  dull  red  on  first  dyeing.  Ammonia  changes 
to  deep  purple.    Second  dyeing  slightly  lighter  than  the  first. 
Fustic. — Dyes  wool  dirty  yellow  on  first  dyeing.  Ammonia 
changes  to  brown.    Second  dyeing  very  light  yellow. 
Litmus. — Dyes  wool  light  pink  on  first  dyeing.  Ammonia  changes 
to  bright  blue.    Second  dyeing  very  faintly  pink. 
Logwood. — Dyes  wool  dirty  yellow  on  first  dyeing.  Ammonia 
changes  to  deep  purple.    Second  dyeing  very  much  lighter. 
Madder. — Dyes  wool  orange  yellow  on  first  dyeing.  Ammonia 
changes  to  red.    Second  dyeing  very  much  lighter. 
Marigold. — Dyes  wool  pale  yellow  on  first  dyeing.  Ammonia 
produces  no  change.    Second  dyeing  little  or  no  color. 
Red  Saunders. — Dyes  wool  a  dirty  pink  on  first  dyeing.  Am. 
monia  changes  to  greenish.    Second  dyeing  little  or  no  color. 
