The thesis is in three major sections, plus a brief conclusion. The first section provides essentail background by describing the care of the mentally ill in England and New South Wales (including the Port Phillip district) in the period prior to the establishment of Yarra Bend Lunatic Asylum in 1848. The second section is a chronological history of Yarra Bend, particularly focusing on the period from its inception in 1848 until the Royal Commission of 1884; with some extension to describe the other psychiatric services within Victoria during the same period.The third section discusses at length a number of key issues identified within the chronological history.