clouded
blue.

No. 9. _Colour blue._ Border eight inches of darkest blue. Centre of
clouded medium and light blue.

No. 10. _Colours blue and white._ Border of very dark and medium blue
woven together. Centre of blue and white yarn woven together.

No. 11. _Colours blue and white._ Border of medium plain blue. Centre
of blue, clouded with white.

No. 12. _Colours blue and white._ Border of medium blue. Centre of
alternate stripes of one inch width blue, and half-inch white stripes.

No. 13. _Colours blue and white._ Border twelve inches deep of dark
blue, clouded with medium. Centre of alternate threads of medium blue
and white.

No. 14. _Colours blue, black and orange yellow._ Border eight inches
deep of black, one inch of orange, two of black. Centre, alternate
threads of blue and orange.

No. 15. Border of doubled threads of dark blue and orange. Centre of
alternate stripes of inch wide light blue and orange woven together,
one-half inch stripes of clear orange and white woven together.

In the examples I have given, wherever doubled threads of different
colours woven together are used, it must be understood that they are
to be slightly twisted, and that the warping for double-filling rugs
need not be as close as for single filling. Twelve threads to the inch
would be better than fifteen, and perhaps ten or eleven would be still
better. Doubled yarn of different colours produces a mottled or broken
effect, and this can often be done where the colours of the yarns do
not quite satisfy the weaver. If they are too dull, twisting them
slackly with a very brilliant tint will give a better shade than if
the original tint was satisfactory, but in the same way yarns which
are too brilliant can often be made soft and effective by twisting
them together with a paler tint. Minute particles of colour brought
together in this way are brilliant without crudeness. It is, in fact,
the very principle upon which impressionist painters work, giving pure
colour instead of mixed, but in such minute and broken bits that the
eye confounds them with surrounding colour, getting at the same time
the double impression of softness and vivacity.

These examples of fifteen different rugs which can be woven from the
three tints of blue, red and orange, together with black and white, do
not by any means exhaust the possibilities of variety which can be
obtained from three tints. Each rug will give a suggestion for the
next, and each may