Nicolaes Tulp attended by prominent learned men, who exchanged ideas about anatomy and the chemical processes of the human body. As befits a new praelector, the Guild commissioned a new group portrait of the prominent councilmen and guildmasters. Rembrandt, himself a young man of 26 and new to the city, won this commission and made a famous painting of him: "The Anatomy Lesson of Dr Nicolaes Tulp". This painting, which now hangs in the Mauritshuis museum of the Hague, depicts Tulp dissecting such a criminal's forearm. There has been much speculation as to why the dissection began on the forearm. Rembrandt's event
Dirck Tulp had been used for dying silk since 1603. The silk was imported from Persia, and shipped, either through Archangelsk or the Strait of Gibraltar. A pair of fashionable Flemish ladies had headed it, its activities occurring in its light and airy attics. Over the years, the operation was largely moved to the Jordaan. When Tulp and his wife began building-work in 1652, they had the building embellished with stucco and the floor laid with marble. The Kloveniersburgwal was an attractive site for the rich, being close to the nerve center of the VOC, in which Tulp was appointed as delegate.