"Uffenbach is in Delft, and comments on the human-built eagles nests behind the city hall. The brothers visit the Oude Kerk to see the epitaphs of Heinsius and Tromp. The next day, the brothers attempt to visit Leeuwenhoeck and surgeon Bogard, but they were both not at home. They visit several bookshops. Uffenbach prefers the shop of Behmann, where he buys a book and inquires about collectors. He mentions this bookseller's collection of French engravings."