The reader will find more on this subject in Bailey's Survival of the Unlike and the literature quoted in the [notes to Chapter VIII.]
For varieties of Indian Wheats, etc., see Watt, Agricultural Ledger, Calcutta, 1895.
For a discussion on so-called "Disease-proof Wheats" consult Eriksson & Henning, Die Getreideroste.
Magnus' paper is in the Berichte der Deutschen bot. Gesellsch., 1894, p. 39.
Concerning physiological races and adapted varieties of Puccinia, etc., see Eriksson, "A General View of the Principal Results of Swedish Research into Grain Rust," Botanical Gazette, vol. 25, 1898, p. 26.
For an account of Wheat-rust see Marshall Ward, "Illustrations of the Structure and Life-history of Puccinia graminis, etc.," Ann. of Bot., 1888, Vol. II., p. 215.
