[56] Freudenreich, Landw. Jahrb. d. Schweiz., 1896, vol. x., p. 1.
[57] Nikolaiewa, Annals of the Botan. Lab. of the Med. Inst. for Women, No. 10. St. Petersburg, 1907.
[58] Kuntze, Centralbl. Bakt. Par., 1909, 24, p. 101.
[59] See Chap. II.
[60] Rubinsky, Centralbl. Bakt. Par. II., 1910, vol. xxviii., p. 161.
[61] Biel, Jahresb. ü. d. Fortschr. d. Tierchem, 1886, 16, p. 159.
[62] Allik, Dissertat. Dorpat., 1896, 19, p. 303.
[63] Fleischmann, Lehrb. d. Milchwirtschaft, 2d edition. Bremen, 1898.
[64] Rist and Khoury, Annal. Pasteur, 1902, 16, p. 65.
[65] Guerbet, Comptes Rendus, 1906.