Part 2 — Notes to Chapter XX.
Reading edition
Further information regarding these "leaf-diseases" will be found in special works dealing with the fungi and insects which cause them. In addition to works already quoted, the reader may also be referred for Fungi to Massee, A Textbook of Plant-diseases caused by Cryptogamic Parasites, London, 1899; or Prillieux, Les Maladies des Plantes Agricoles, 1895. See also Marshall Ward, Coffee-leaf Disease, Sessional Papers, XVII., Ceylon, 1881, and Journ. Linn. Soc., Vol. XIX., 1882, p. 299.
The question of "Sun-spots" has been dealt with by Jönnson in Zeitschr. f. Pflanzenkrankh., 1892, p. 358.