Rembrandt "Danaë", 1636), seeking to emulate the baroque style of Rubens. With the occasional help of assistants in Uylenburgh's workshop, he painted numerous portrait commissions both small ("Jacob de Gheyn III") and large ("Portrait of the Shipbuilder Jan Rijcksen and his Wife", 1633, "Anatomy Lesson of Dr. Nicolaes Tulp", 1632). By the late 1630s Rembrandt had produced a few paintings and many etchings of landscapes. Often these landscapes highlighted natural drama, featuring uprooted trees and ominous skies ("Cottages before a Stormy Sky", c. 1641; "The Three Trees", 1643). From 1640 his work became less exuberant and more sober in tone, possibly
Observationes Medicae (Tulp) popular, that a hundred years later a translated version was published. Professor Tulp never wanted to publish in Dutch for fear of hypochondriac behavior. He was very against quacks and self-medication and it was for this reason that he worked on the Amsterdam Pharmacopoeia. This second version therefore, would have been against his wishes. However, the book was prefaced by a long "lykoratie", or ode to his memory, in which Ludovicus Wolzogen explains what a wonderful man Tulp was, and everything that he did for the city of Amsterdam and medicine in general. He claims to have made an accurate