iv. They should be capable of readily conforming to the various

operations of the dyer.

2684. The Mordants.

For the reasons just given, the acetate or tartrate of iron is preferable to the sulphate; and the acetate or tartrate of alumina to alum. _For reds, yellows, green, and pinks_, aluminous mordants are to be used. _For blacks, browns, puces, and violets_, the acetate or tartrate of iron must be employed. _For scarlets_, use a tin mordant, made by dissolving in strong nitric acid one-eighth of its weight of sal-ammoniac, then adding by degrees one-eighth of its weight of tin, and diluting the solution with one-fourth of its weight of water.

[CUNNING MEN'S CLOAKS SOMETIMES FALL.]

2685. Calico, Linen, and Muslin (Blue).

_Blue_.--Wash well to remove dressing, and dry; then dip in a strong solution of sulphate of indigo--partly saturated with potash--and hang up. Dry a piece to see if the colour is deep enough; if not dip again.

_Saxon Blue_.--Boil the article in alum, and then dip in a strong solution of chemical blue.

2686. Calico, Linen, and Muslin (Buff).

_Buff_.--Boil an ounce of anatto in three quarts of water, add two ounces of potash, stir well, and put in the calico while boiling, and stir well for five minutes; remove and plunge into cold pump water, hang up the articles without wringing, and when almost dry, fold.

2687. Calico, Linen, and Muslin (Pink).

_Pink_.--Immerse in the acetate of alumina mordant, and then in the colouring of a pink saucer.

2688. Calico, Linen, and Muslin (Green).

_Green_.--Boil the article in an alum mordant, and then in a solution of indigo mixed with any of the yellow dyes until the proper colour is obtained.

2689. Calico, Linen, and Muslin (Yellow).

_Yellow_.