The present tendency of investigation in medicine : an address delivered before the Suffolk District Medical Society at its second anniversary meeting, Boston, March 28, 1851 Parkman, Samuel, 1816-1854. Medicine Science Boston : David Clapp, printer, 1851 Suffolk District Medical Society (Suffolk County, Mass.) Addresses Text 40 p. nlm:nlmuid-62810870R-bk 62810870R http://resource.nlm.nih.gov/62810870R English The National Library of Medicine believes this item to be in the public domain : https://creativecommons.org/publicdomain/mark/1.0/