An Inquiry Into the Alleged Tendency of the Separation of Convicts, One From the Other, to Produce Disease and DerangementDisbound 8vo; iv, [5] 160 pp. Very Good+ with mild creasing. Duplicate title page and table of contents. A defense of the Pennsylvania system of prisons dictating total solitary confinement, in comparison to Auburn in which prisoners had some communal time during work hours. Packard was an ardent supporter of the experiment in solitary confinement which had been introduced with Eastern Penitentiary in the 1820s. He published, "A vindication of the