[141] Russell and Hastings, 18 Rept. Ibid., 1901.
[142] Russell, Bull. 44, Wis. Expt. Stat.
[143] Russell, 22 Wis. Expt. Stat. Rept., 1905, p. 232.
[144] Russell, 12 Wis. Expt. Stat. Rept., 1895, p. 160.
[145] De Schweinitz, Nat. Med. Rev., 1899, No. 11.
[146] Harding and Rogers. Bull. 182, N. Y. (Geneva) Expt. Stat., Dec., 1899.
[147] Jensen, Milchkunde und Milch Hygiene, p. 132.
[148] 22 Wis. Expt. Stat. Rept., 1905, p. 236.
[149] Shockley, Thesis, Univ. of Wis., 1896.
[150] Marshall, Mich. Expt. Stat., Bull. 147, p. 47.