the Biology of _B. ramosus_," _Proc. R. Soc._, 1895, vol. lviii. p. 1;
Sturgis, "A Soil Bacillus of the type of de Bary's _B. megatherium_,"
_Phil. Trans._ [v.03 p.0171] vol. cxci. p. 147; Klein, L., _Ber. d.
deutschen bot. Gesellsch._ (1889), Bd. vii.; and _Cent. f. Bakt. und Par._
(1889), Bd. vi. Classification: Marshall Ward, "On the Characters or Marks
employed for classifying the Schizomycetes," _Ann. of Bot._, 1892, vol.
vi.; Lehmann and Neumann, _Atlas and Essentials of Bacteriology_; also the
works of Migula and Fischer already cited. Myxobacteriaceae: Berkeley,
_Introd. to Cryptogamic Botany_ (1857), p. 313; Thaxter, "A New Order of
Schizomycetes," _Bot. Gaz._ vol. xvii. (1892), p. 389; and "Further
Observations on the Myxobacteriaceae," _ibid._ vol. xxiii. (1897), p. 395,
and "Notes on the Myxobacteriaceae," _ibid._ vol. xxxvii. (1904), p. 405;
Baur, "Myxobakterienstudien," _Arch. f. Protistenkunde_, Bd. v. (1904), p.
92; Smith, "Myxobacteria," _Jour. of Botany_, 1901, p. 69; Quehl, _Cent. f.
Bakt._ xvi. (1896), p. 9. Growth: Marshall Ward, "On the Biology of _B.
ramosus_," _Proc. R. Soc._ vol. lviii. p. 1 (1895). Fermentation, &c.:
Warington, _The Chemical Action of some Micro-organisms_ (London, 1888);
Winogradsky, "Recherches sur les organismes de la nitrification," _Ann. de
l'Inst. Past._, 1890, pp. 213, 257, 760, 1891, pp. 92 and 577; "Sur
l'assimilation de l'azote gazeux, &c.," _Compt. Rend._, 12 Feb. 1894; "Zur
Microbiologie des Nitrifikationsprozesses," _Cent. f. Bakt._ Abt. II. Bd.
ii. (1896), p. 415; "Ueber Schwefel-Bakterien," _Bot. Zeitg._, 1887, Nos.
31-37; _Beitr. zur Morph. u. Phys. der Bakterien_, H. 1 (1888); "Ueber
Eisenbakterien," _Bot. Zeitg._, 1888, p. 261; and Omeliansky, "Ueber den
Einfluss der organischen Substanzen auf die Arbeit der nitrifizierenden
Organismen," _Cent. f. Bakt._ Abt. II. Bd. v. (1896); Schorler, "Beitr. zur
Kenntniss der Eisenbakterien," _Cent. f. Bakt._ Abt. II. Bd. xii. (1904),
p. 681; Marshall Ward, "On the Tubercular Swellings on the Roots of Vicia
Faba," _Phil. Trans._, 1877, p. 539; Hellriegel and Wilfarth, "Unters.
ueber die Stickstoffnahrung der Gramineen u. Leguminosen," _Beit. Zeit. d.
Vereins fuer die Ruebenzuckerindustrie_ (Berlin, 1888); Nobbe and Hiltner,
_Landw. Versuchsstationen_ (1899), Bd. 51, p. 241, and Bd. 52, p. 455;
Maze, _Annales de l'Institut Pasteur_, t. II, p. 44, and t. 12, p. 1
(1897); Prazmowski, _Land. Versuchsstationen_, Bd. 37 (1890), p.