Letter from Howard Walter Florey to J Casley-Smith, University of Adelaide Thanks for letter - has sent off reference - hopes it will be of assistance - Casley-Smiths's proposals sound very interesting - has seen pictures made using barium by workers at Harvard - would like to be sure what happens to proteins which pass through the vessel wall - says his wife has been in hospital in Sydney - thanks for kind remarks about peerage. 13 July 1965