James Hector (seated, second from right) was one of several scientists eager to examine the skeleton of a whale captured at Stewart Island in January 1874. Also present are Walter Mantell (standing fourth from right), Thomas Kirk (standing third from right), and John Buchanan (standing right).
Nancy M. Adams. 'Buchanan, John', Dictionary of New Zealand Biography, first published in 1990. Te Ara - the Encyclopedia of New Zealand, https://teara.govt.nz/en/biographies/1b42/buchanan-john (accessed 30 March 2020)