Iowa State University Veterinarian Records, RS 22/6/0/9, University Archives, Special Collections Department, Iowa State University, http://www.add.lib.iastate.edu/spcl/arch/rgrp/22-6-0-9.html
Tetanus is a neurotoxic disease of warm-blooded animals characterized by hyperesthesia, tetany, and convulsions. Recognized since the days of Hippocrates, tetanus was described in horses by Aspyrtus in the fourth century.
Dibbern, K. D. and Lundvall, R. L.
"Tetanus in the Horse,"
Iowa State University Veterinarian: Vol. 33
, Article 3.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol33/iss2/3