ate Blue._--Dye with 1/4 lb. Diamine dark blue B, 2 oz. Diamine new
blue R, 1 lb. soda and 10 lb. Glauber's salt; fix with 2 lb. sulphate of
copper and 1 lb. acetic acid.

_Grey._--Prepare the dye-bath with 2 lb. Cross-dye black 2 B, 5 lb. soda
ash, 15 lb. common salt; after rinsing leave the cotton in the air to
age overnight, rinse again and work for half to three-quarters of an
hour at from 150 deg. to 160 deg. F. in a bath containing 5 lb. bichromate of
potash and 5 lb. sulphuric acid, then thoroughly rinse and dry.

_Dark Grey._--Dye with 1 lb. Diamine jet black Cr, 1 lb. soda and 10 lb.
Glauber's salt, fixing with 1 lb. bichromate of potash and 1/2 lb.
acetic acid.

_Green Grey._--Dye with 1 lb. Diamine dark blue B, 2 oz. Diamine orange
B, 4 oz. Diamine fast yellow B, 1 lb. soda and 10 lb. Glauber's salt,
fixing with 3 lb. sulphate of copper and 1 lb. acetic acid.

_Grey._--Dye with 4 oz. Dianil black N, 1 lb. soda and 10 lb. salt,
fixing with 1 lb. copper sulphate and 1/2 lb. acetic acid.

_Black._--Prepare the dye-bath with 5-1/2 lb. Diamine jet black R B, 1
lb. Diamine dark blue B, 20 lb. Glauber's salt; dye at the boil for one
hour, rinse and then treat the goods simmering for twenty minutes with 4
lb. bichromate of potash.

_Black._--Prepare the dye-bath with 8 lb. Chromanil black R F and 20 lb.
Glauber's salt; dye at the boil for one hour, then treat boiling hot for
about thirty minutes in a fresh bath with 1 lb. bichromate of potash
and 3 lb. sulphate of copper. Add 6 lb. only of the dye-stuff to the
bath for a second batch.

_Black._--Use 5 lb. Dianil black N, 5 lb. soda and 20 lb. salt; then fix
with 3 lb. copper sulphate, 3 lb. bichromate of potash and 2 lb. acetic
acid.

_Black._--Use in the dye-bath 5 lb. Dianil black C R. 3 lb. caustic
soda, 36 deg. Tw. and 20 lb. salt, fixing with 3 lb. copper sulphate, 3 lb.
bichromate of potash and 2 lb. acetic acid.

_Jet Black._--Dye with 5 lb. Diamine jet black Cr, 1 lb. soda and 20 lb.
Glauber's salt, fixing with 4 lb. bichromate of potash and 2 lb. acetic
acid.

It will be convenient here to deal with a small but growing and
important class of dye-stuffs which contain sulphur in their
composition, and which, therefore, are named:--

=Sulphur or Sulphyl Colours.=

The original type of this group is Cachou de laval, sent out a good many
years ago, but of late years Vidal black, St. Dennis black, Cross-dye
blacks and drab, Immedial blacks, blues an