 The Austrian Emperor decreed that the members have to wear a special uniform; this made it the only Polish parliament-like body in the history of Polish politics with a dress code requirement.Excepting the establishment of the Ossolineum as a center for Polish cultural study, the Sejm reflected the conservative attitudes of the body's unelected members from the nobility and the landed gentry.From the late 1830s an influx of new members, such as Leon Sapieha, Władysław Badeni, and Governor Wacław Michał Zaleski, Agenor Gołuchowski made the body more progressive and representative.