[5] Doane, Bull. 79, Md. Expt. Stat., Jan. 1902.

[6] Harrison, 22 Rept. Ont. Agr'l Coll., 1896, p. 113.

[7] Moore and Ward, Bull. 158, Cornell Expt. Stat., Jan. 1899; Ward, Bull. 178, Cornell Expt. Stat., Jan. 1900.

[8] Harrison, 22 Rept. Ont. Agr. Coll., 1896, p. 108; Moore, 12 Rept. Bur. Animal Ind., U. S. Dept. Ag., 1895-6, p. 261.

[9] Moore, Bacteria in Milk, N. Y. Dept. Ag., 1902.

[10] Freudenreich, Cent. f. Bakt., II Abt., 10: 418, 1903.

[11] Harrison, 22 Rept. Ont. Agr. Coll., 1896, p. 108.

[12] Marshall, Bull. 147, Mich. Expt. Stat., p. 42.

[13] Moore and Ward, Bull. 158, Cornell Expt. Stat., Jan. 1899.

[14] Burr, R. H. Cent. f. Bakt., II Abt., 8: 236, 1902. Freudenreich, l. c. p. 418. Ward, Bull. 178, Cornell Expt. Stat., p. 277. Bolley (Cent. f. Bakt., II Abt., 1: 795, 1895), in 30 experiments found 12 out of 16 species to belong to lactic class. Harrison (Trans. Can. Inst., 7: 474, 1902-3) records the lactic type as most commonly present.