Gardeners at work. The man on the left is using a sharp knife
Gardeners at work. The man on the left is using a sharp knife, perhaps to remove a bud for grafting, while the man on the rights is grafting new wood on to the stump of a tree, a procedure often followed when it was necessary to rejuvenate an old tree. Engraving from an 18th century edition of Virgil's 'Georgics'.