Part 11 (2/2)

The ht colours

_Tin_, for brightening some colours, and as a separate_Chrome_, for certain browns such as catechu

The principal Alum mordant is Acetate of Alumine, prepared as follows: Let 3 lbs Aluallon of ater in an earthenware pan, add the chalk slowly to the Alu 24 to 36 hours

Let it remain 12 hours at rest Decant and preserve the clear liquor, being careful not to stir up the sediallons of water on the sediment, and stir occasionally for 12 hours Let it rest 12 hours Decant the clear and add to the first lot Bottle for use It keeps about three weeks Of the mordant 2 parts are diluted with 1 of water, and the silk is orked in this for 10out and dry Wet down again and return to the Alum liquor, work for 10 hly dry, ell in several changes of water before dyeing For less bright colours onemay be sufficient

The mordant is used for successive batches of silk until exhausted; the fresher the hter colours Silk should be dyed as soon after it is dried as is convenient

Another Alum mordant Dissolve 25 per cent of Alum in hot water and add 6 per cent carbonate of soda crystals Fill up a jar ater and steep silk in it over-night It

RECIPES FOR DYEING

(1) INDIGO VAT FOR BLUE

Silk is dyed in a sier vats and longer dips to obtain the sae 33

(2) INDIGO EXTRACT FOR BLUE

Dye at a teo Extract dissolved in the bath as is required for the desired depth of shade

If the silk has been first mordanted with alum, compound colours can be obtained by the addition of a red or yellow dye to the bath

(3) CRIMSON

Mordant with Alum or Aluminium Acetate and dye with 40 to 50 per cent Cochineal A teaspoonful of Tin, dissolved in cold water, hten Boil well It is advisable to wash in soap after using tin as it prevents the latterthe yarn brittle

(4) MADDER RED

Mordant with Alum or Aluminium Acetate Dye with 80 to 100 per cent Madder and a handful of bran per pound of silk Bring slowly to the boil in 1 hour, boil a fewa short time in soap, with a little tin

(5) YELLOW

Mordant with Alum or Aluminium Acetate Various Dyes may be used

_Weld_: Dye with 150 per cent _Flavin_: Dye with 1 oz to the pound, with a teaspoonful Tin _Fustic_: Dye with 50 per cent, or more

_Quercitron_: Dye with 10 to 20 per cent A little chalk may be added towards the end

The shades may be varied by the addition of se may be obtained by the use of Madder, 2 to 4 ozs

per pound, with Flavin or Fustic

(6) GREEN

Greenswith any of the yellow dyes and blueing in the Indigo Vat or with Indigo Extract If the colour is thin, it should be dyed a deeper blue in the vat and then re-dyed with yellow A strong clear yellow is needed for a good green

(7) PURPLE