"Druing the cattle plague crisis of 1865-66, Gamgee was one of the prtincipal witnesses called to give evidence by the Cattle Plague Commissioners and amongst the first to recommend a policy of restriction of movement and mass slaughter. He was also the first veterinary surgeon to successfully use the thermometer for clinical purposes, measuring body temperatures of animals in the incubative and clinical stages of cattle plague" (Hunter, Veterinary medicine: A guide to historical sources). Digital facsimile from Google Books at this liink.