wo horses side by
side, say six or eight feet. Your bas-relief has, on the scale,[131] say
the depth of the third of an inch. Now, if you gave only the sixth of an
inch for the depth of the off horse, and, dividing him again, only the
twelfth of an inch for that of each foreleg, you would make him look a
mile away from the other, and his own forelegs a mile apart. Actually,
the Greek has made the _near leg of the off horse project much beyond
the off leg of the near horse_; and has put nearly the whole depth and
power of his relief into the breast of the off horse, while for the
whole distance from the head of the nearest to the neck of the other, he
has allowed himself only a shallow line; knowing that, if he deepened
that, he would give the nearest horse the look of having a thick nose;
whereas, by keeping that line down, he has not only made the head itself
more delicate, but detached it from the other by giving no cast shadow,
and left the shadow below to serve for thickness of breast, cutting it
as sharp down as he possibly can, to make it bolder.

171. Here is a fine piece of business we have got into!--even supposing
that all this selection and adaptation were to be contrived under
constant laws, and related only to the expression of given forms. But
the Greek sculptor, all this while, is not only debating and deciding
how to show what he wants, but, much more, debating and deciding what,
as he can't show everything, he will choose to show at all. Thus, being
himself interested, and supposing that you will be, in the manner of
the driving, he takes great pains to carve the reins, to show you where
they are knotted, and how they are fastened round the driver's waist
(you recollect how Hippolytus was lost by doing that), but he does not
care the least bit about the chariot, and having rather more geometry
than he likes in the cross and circle of one wheel of it, entirely omits
the other!

172. I think you must see by this time that the sculptor's is not quite
a trade which you can teach like brickmaking; nor its produce an article
of which you can supply any quantity "demanded" for the next railroad
waiting-room. It may perhaps, indeed, seem to you that, in the
difficulties thus presented by it, bas-relief involves more direct
exertion of intellect than finished solid sculpture. It is not so,
however. The questions involved by bas-relief are of a more curious and
amusing kind, requiring great variety of expedients