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Published online by Cambridge University Press: 15 September 2014
A considerable amount of work has been performed in investigating the nature of the nodular outgrowths upon the roots of various plants. One of the earliest observations in this direction was by Naegeli in 1842, who found that the swellings upon the roots of Iris were caused by a parasitic fungus.
note * page407 See later on in this paper.
note † page407 See Dr Griffiths' papers in Chemical News, vol. liii. p. 255, vol. 1. p. 193, vol. lv. p. 276, vol. lvi. p. 84 ; Chemiker Zeitung, No. 47 ; Journal Chemical Society, 1886, p. 114.