11. Riding. The subduing of animals to domestic service.

12. Weaving. The making of clothes with swiftness, and in precision of structure, by help of the loom.

13. Law, revealed as directly from heaven.

14. Dædalus (not Icarus, but the father trying the wings). The conquest of the element of air.

As the seventh subject of the first group introduced the arts of home after those of the savage wanderer, this seventh of the second group introduces the arts of the missionary, or civilized and gift-bringing wanderer.

15. The Conquest of the Sea. The helmsman, and two rowers, rowing as Venetians, face to bow.

16. The Conquest of the Earth. Hercules victor over Antæus. Beneficent strength of civilization crushing the savageness of inhumanity.

17. Agriculture. The oxen and plough.

18. Trade. The cart and horses.

19. And now the sculpture over the door of the tower. The Lamb of God, expresses the Law of Sacrifice, and door of ascent to heaven. And then follow the fraternal arts of the Christian world.