To construct things_--the 'constructive instinct.' I
quote Mr Holmes here:

After analysis comes synthesis. The child pulls his toys
to pieces in order that he may, if possible, reconstruct
them. The ends that he sets before himself are those which
Comte Set before the human race--_savoir pour prevoir, afin
de pouvoir: induire pour deduire, afin de construire._ The
desire to make things, to build things up, to control ways
and means, to master the resources of nature, to put his
knowledge of her laws and facts to practical use, is strong in
his soul. Give him a box of bricks, and he will spend hours
in building and rebuilding houses, churches.... Set him on a
sandy shore with a spade and a pail, and he will spend hours
in constructing fortified castles with deep encircling moats.

Again obviously this constructive instinct overlaps with the
imitative ones. Construction, for example, enters into the art of
making mud-pies and has also been applied in the past to great
poetry. If you don't keep a sharp eye in directing this instinct,
it may conceivably end in an "Othello" or in a "Divina Commedia."

II

Without preaching on any of the others, however, I take three of
the six instincts scheduled by Mr Holmes--the three which you
will allow to be almost purely imitative.

They are:

Acting,
Drawing, painting, modelling,
Dancing and singing.

Now let us turn to the very first page of Aristotle's "Poetics,"
and what do we read?

Epic poetry and Tragedy, Comedy also and dithyrambic poetry,
and the greater part of the music of the flute and of the
lyre, are all, in general, modes of imitation....

For as their are persons who represent a number of things
by colours and drawings, and others vocally, so it is with
the arts above mentioned. They all imitate by rhythm,
language, harmony, singly or combined.

Even dancing (he goes on)

imitates character, emotion and action, by rhythmical
movement.

Now, having touched on mud-pies, let me say a few words upon
these aesthetic imitative instincts of acting, dancing, singing
before I follow Aristotle into his explanation of the origin of
Poetry, which I think we may agree to be the highest subject of
our Art of Reading and to hold promise of its highest reward.

Every wise mother sings or croons to her child and dances him on
her knee. She does so by sure instinct, long before the small
body can respond or his eyes--