Portrait painting benefitted greatly from such commissions and from the general appreciation of art by bourgeois clients, who supported portraiture as well as still-life and landscapes painting. In addition, the first significant art and dealer markets flourished in Holland at that time. With plenty of demand, Rembrandt was able to experiment with unconventional composition and technique, such as chiaroscuro. He demonstrated these innovations, pioneered by Italian masters such as Caravaggio, most notably in his famous "Night Watch" (1642). "The Anatomy Lesson of Dr. Tulp" (1632) is another fine example of Rembrandt's mastery of the group painting, in which he bathes the corpse
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