cetic acid.

_Medium Blue_.--Mordant as in the last. Dye with 5 lb. Alizarine Blue
G W, 2-1/2 lb. Brilliant Alizarine Blue G, and 2 lb. acetic acid.

_Lavender Blue_.--Mordant with 3 lb. bichromate of potash and
2-1/4 lb. tartar. Dye with 2 lb. Alizarine Blue A.

_Navy_.--Mordant as in the last recipe, and dye with 20 lb. Alizarine
Blue A.

_Deep Sky Blue_.--Mordant with 3 lb. bichromate of potash and 1 lb.
oxalic acid, then dye with 2-1/2 lb. Chrome Blue.

_Bright Blue_.--A very fine bright shade is obtained by mordanting as
in the last, and then dyeing with 10 lb. Chrome Blue.

_Lilac Blue_.--Mordant with 2 lb. bichromate of potash and 1-1/2 lb.
tartar. Dye with 4 lb. Alizarine Blue D N W. Alizarine Blue R gives
somewhat bluer shades than the D N W brand.

_Slate Blue_.--Mordant with 3 lb. bichromate of potash and 2-1/2 lb.
tartar. Dye with 2-1/2 lb. Alizarine Blue D N W, 4 oz. Alizarine
Brown, and 1-2/3 oz. Alizarine Yellow.

_Peacock Blue_.--Mordant with 3 lb. bichromate of potash and 2-1/2 lb.
tartar. Dye with 6 lb. Alizarine Blue D N W, 3 lb. Alizarine Yellow,
and 1-1/2 lb. Patent Blue A, adding a little acetic acid to the
dye-bath.

_Paris Blue_.--Mordant as in the last recipe. Dye with 3 lb. Galleine,
1 lb. Alizarine Blue D N W, and 1 lb. Patent Blue A, adding a little
acetic acid.

_Grey Blue_.--Mordant as above and dye with 4-1/2 lb. Alizarine Blue
D N W, and 1 lb. Alizarine Brown.

_Blue_.--Mordant with 10 lb. alum, 3 lb. tartar, and 2 lb. oxalic
acid. Dye with 15 lb. Anthracene Blue W G, 3 lb. acetate of lime, and
1 lb. tannic acid.

_Red Navy_.--Mordant as in the last recipe and dye with 15 lb. (p. 159)
Anthracene Blue B W, 3 lb. acetate of lime, and 3/4 lb. tannic acid.

_Dark Blue_.--Mordant with 1 lb. bichromate of potash and 2 lb.
tartar. Then dye with 20 lb. Anthracene Blue W B. Anthracene Blue W G
gives slightly greener shades than the W B brand, while the W R blue
gives redder shades.

Grounding wool with various tints of indigo is a favourite method of
producing many useful shades on wool. In general it is a good plan, as
the bottom so given is a fast and permanent one, and is not in any way
affected (so far as the stability of the colour is concerned) by the
subsequent dyeing operations, care of course being taken that these
are the usual acid or mordanting baths. The only drawback against
bottoming with indigo is the increased cost of dyeing necessitated by
the extra labour,