Pliny's Naturalis Historia - a brilliant and sophisticated encyclopaedia of the scientific, artistic, philosophical, botanical and zoological riches of the ancient world - has had a long career in the footnotes of historical studies. This is a phenomenon born of the sense that the work was there to consult, or to 'use', as a resource to aid investigation of specific technical issues or passages, of Quellenforschung, or of delimited topic areas...