Well To All Of These Must Be Superadded Durability When Used A
:
ON COLOURS AND PIGMENTS GENERALLY.
quality to which the health and vitality of a picture belong, and one so
essential that all other properties put together without it are of no
esteem with the artist who merits reputation. We have, therefore, given
it a previous distinct consideration.
It must be observed that no pigment possesses all the foregoing
qualifications in perfection, some being naturally at variance or
opposed; nor is there any, perhaps, that cannot boast excellence in one
or more of them.