Laboratory notes, letters and ephemera collected by John Henry Gaddum Matreial extracted from the laboratory notebook of J H Gaddum, 1953-57 [JHG/2/19]. Notes were found between back page and cover and moved to a separate file. Contains several pages of notes; a letter on preparing platelet suspensions headed Dept of Surgery, University New Buildings, Teviot Place, Edinburgh (p3); letter from Murray Laffran of the Allan Memorial Institute to Gaddum with results of tests on his preparation 'P' (p14); letter from M Rocha e Silva concerning his sending Gaddum two samples of Brandykinin (p15); a list of substances marked 'from Boyland' (16); note on methods of plasma collection (p21); graphs of tests on HT and sleeping times (p25-27); letter from John B Jepson to Gaddum regarding availability of 5-hydroxy-indolyl-acetic acid (pp28-29); letter from Gustav Born describing his work with platelets (pp30-31). 1950s