(p. 099)
shade can be turned bluer in tone, while the addition of a little
Milling Yellow O, or Titan Yellow, turns it to the green side.

_Pearl Grey_.--Make the dye-bath with 10 lb. Glauber's salt, 5 lb.
acetic acid, and 3/4 lb. Naphthylamine Black D. This gives fine shades
of pearl grey.

_Bluish Grey_.--Mordant the wool by boiling in a bath made with 2 lb.
bichromate of potash, 1 lb. tartar, and 1 lb. sulphuric acid. Dye in a
bath containing 2 oz. Diamine Black (or 3/4 oz. Diamond Black and
1-1/2 oz. Alizarine Cyanine R), working at the boil for an hour and a
half.

_Grey_.--This can be dyed with 3 oz. Nyanza Black B, and 10 lb.
Glauber's salt, working at the boil.

_Reddish Grey_.--A good full shade is dyed with 1-1/2 oz. Cyanole
extra, 1/4 oz. Orange extra, 3/4 oz. Archil Substitute N, 10 lb.
Glauber's salt and 3 lb. sulphuric acid.

_Slate Grey_.--The dye-bath is made with 3 oz. Cyanole extra, 1/2 oz.
Archil Substitute N, 3/4 oz. Orange extra, 10 lb. Glauber's salt and
2 lb. sulphuric acid.

_Bright Pearl Grey_.--Prepare a dye-bath with 3/4 oz. Patent Blue,
1/2 oz. Acid Violet N, 3/4 oz. Orange G, 10 lb. Glauber's salt and
2 lb. sulphuric acid.

_Stone Grey on Wool_.--The dye-bath is made with 1/2 oz.
Chromotrop 2 R, 3/4 oz. Cyanole extra, 1-1/2 oz. Fast Acid Blue R,
3/4 oz. Acid Yellow, 20 lb. Glauber's salt, 3 lb. acetic acid. Enter
at 80 deg. F., then warm slowly and work to shade, lift, wash and dry.

These recipes will probably be sufficient to show the lines on which
greys may be obtained in wool dyeing. It may be added that from the
Acid Blacks B, B B, and S, good greys of a violet tone may be
obtained, using from 1/2 to 3/4 oz. dye-stuff. The Naphthol Blacks
will also be found useful in the same way, while the greys from
Anthracene Chrome Blacks and the Alizarine blacks are very good and
fast.

#Red Shades on Wool.#--The number of red shades that may be dyed (p. 100)
on wool is infinite. They range over every variety of tint of red, from
the palest blush-rose to the deepest crimson, and from the most brilliant
pink to the dullest grenat shade.

It is quite impossible here to describe the dyeing of every imaginable
shade of red, while the great variety of red dye-stuffs, both natural
and artificial, adds to the difficulty of dealing in the space at
command with all the various methods and dyes that may be used in the
dyeing of reds on wool.

The methods that may be adopted for dyeing re