ding down from Heaven in order to infuse sleep, and,
turning towards the side of the bed, about to touch the tester with
his wand. On the left-hand facade, in the horn next to the facade at
the foot, we might have the Lares, his two sons, who were the tutelary
spirits of private houses; namely, two young men dressed in the skins
of dogs, with certain garments girt up and thrown over the left
shoulder in such a way that they may come out under the right, in
order to signify that they are unencumbered and ready to guard the
house. They shall sit one beside the other, each holding a spear in
the right hand, and between them, in the centre, there shall be a dog,
and above them a small head of Vulcan, wearing a little cap, with a
smith's pincers beside it. In the other horn, next to the facade at
the head, you must paint a Battus being converted into stone for
having revealed the cattle stolen by Mercury. Let him be an old
shepherd seated, showing with the forefinger of the right arm the
place where the cattle were hidden, and leaning with the left arm on a
stick or rod, the herdsman's staff; and from the waist downwards he
must be of black stone of the colour of basanite, into which stone he
was converted. Then in the rest of the great window you must paint the
scene of the sacrifice that the ancients used to offer to Mercury to
the end that their sleep might not be interrupted; and to represent
this it is necessary to make an altar with his statue upon it, at the
foot of that a fire, and all around persons who are throwing into it
pieces of wood for burning, and who, having in their hands cups full
of wine, are sprinkling part of the wine and drinking the rest.

"In the centre of the oval, in order to fill up all the space of the
heaven, I would paint Twilight, as being the mean between Aurora and
Night. To represent him, I find that one must paint a young man wholly
naked, sometimes with wings and sometimes without, and with two
lighted torches, one of which we must show being kindled at that of
Aurora, and the other held out towards Night. Some represent this
young man, with the same two torches, as riding on one of the horses
of the Sun or of Aurora, but this would not be a composition suitable
for our purpose; wherefore we shall make him as described above,
turned towards Night, and place behind him, between his legs, a great
star, which shall be that of Venus, because Venus, Phosphorus,
Hesperus, and Twilight seem to