Part 8 (1/2)

Weld is of greater antiquity than most, if not all, other natural yellow dyes It is cultivated for dyeing in France, Germany and Italy

It is important as it dyes silk with a fast colour

(1) OLD GOLD

Mordant with 2 per cent chrome and dye with 60 per cent of weld in a separate bath 3 per cent chalk adds to intensity of colour

(2) YELLOW

Mordant with alum, and dye with 1 lb of weld for every pound of wool

Common salt deepens the colour If alum is added to the dye bath, the colour becomes paler and more lively Sulphate of iron inclines it to brown

(3) ORANGE

Mordant with alum with a little weld in the bath Dye eld Add teaspoonful of tin to the dye bath Boil in separate bath with 1/4 oz

madder or cochineal to the pound

_OLD FUSTIC_

Fustic is the wood of _Morus tinctoria_, a tree of Central America It is used principally for wool With bi+chroold colour With aluhtest yellows are got fro with tin With copper sulphate it yields olive colours (4 to 5 per cent copper sulphate and 3 to 4 per cent tartar) With ferrous sulphate darker olives are obtained (8 per cent ferrous sulphate) For silk it does not produce as bright yellows as weld, but can be used for various shades of green and olive Prolonged dyeing should always be avoided, as the yellows are apt to become brownish and dull

RECIPES FOR DYEING WITH OLD FUSTIC

(1) OLD GOLD

Boil the ith 3 to 4 per cent chrome for 1 to 1-1/2 hours Wash, and dye in a separate bath for 1 to 1-1/2 hours at 100C with 20 to 80 per cent of old fustic

(2) OLD GOLD

Mordant with 3 per cent chrome, for 3/4 hour and wash Dye with 24 per cent fustic and 4 per cent madder for 45 minutes

(3) BRIGHT YELLOW

Mordant ith 8 per cent of stannous chloride for 1 to 1-1/2 hours, and 8 per cent of tartar Wash, and dye with 20 to 40 per cent of fustic

(4) GREENISH YELLOW

Mordant ith 3 per cent chrome, for 3/4 hour and wash Dye with 6 per cent fustic, 33 per cent logwood Boil 3/4 hour

(5) YELLOW