I gave a lecture to the Eton boys a year or two ago, on little more than the shepherd's dog, which is yet more wonderful in magnified scale of photograph. The lecture is partly published—somewhere, but I can't refer to it.
5. Jubal.
Still Giotto's, though a little less delighted in; but with exquisite introduction of the Gothic of his own tower. See the light surface sculpture of a mosaic design in the horizontal moulding.
Note also the painter's freehand working of the complex mouldings of the table—also resolvedly oblong, not square; see central flower.
6. Tubal Cain.
Still Giotto's, and entirely exquisite; finished with no less care than the shepherd, to mark the vitality of this art to humanity; the spade and hoe—its heraldic bearing—hung on the hinged door. [Footnote: Pointed out to me by Mr. Caird, who adds farther, "I saw a forge identical with this one at Pelago the other day,—the anvil resting on a tree-stump: the same fire, bellows, and implements; the door in two parts, the upper part like a shutter, and used for the exposition of finished work as a sign of the craft; and I saw upon it the same finished work of the same shape as in the bas-relief—a spade and a hoe.">[ For subtlety of execution, note the texture of wooden block under anvil, and of its iron hoop.
The workman's face is the best sermon on the dignity of labour yet spoken by thoughtful man. Liberal Parliaments and fraternal Reformers have nothing essential to say more.
7. Noah.
Andrea Pisano's again, more or less imitative of Giotto's work.
8. Astronomy.