Collections for an essay towards a materia medica of the United States. View Metadata. By: Barton, Benjamin Smith, Edition: 3rd ed., with additions. Publication info: Philadelphia,Printed for E. Earle. Fry and Kammerer, printers,1810. Holding Institution: University Library, University of Illinois Urbana Champaign. Conspectus Psittacorum: cum specierum definitionibus, novarum descriptionibus.