[180] Campbell, No. Brit., Agric., May 12, 1897.

[181] Weigmann, Milch Zeit., No. 50, 1889.

[182] Klein, Milch Zeit. (Hildesheim), No. 17, 1900.

[183] Adametz, Landw. Jahr., 18:256.

[184] Van Slyke and Hart, Bull. 214, N. Y. Expt. Stat., July 1902.

[185] Milch Zeit., 1898, No. 49.

[186] Lafar, Technical Mycology, p. 216.

[187] Adametz, Landw. Jahr., 18:228.

[188] Freudenreich, Landw. Jahr. d. Schweiz, 4:17; 5:16.

[189] Russell, 13 Rept. Wis. Expt. Stat., 1896, p. 95.