[511] Vid. op. cit. supra, p. 27: Chemical News, Vol. 55, p. 49.
[512] Vid. op. cit. 111, p. 28.
[513] Vid. op. et. loc. cit. supra.
[514] Russell; Dairy Bacteriology.
[515] Woll; Dairy Calendar, p. 223.
[516] Van Slyke; Bulletin 82, New Series, New York Agricultural Experiment Station, p. 654.
[517] Babcock; Twelfth Annual Report Wisconsin Agricultural Experiment Station, p. 133.
[518] Woll; Dairy Calendar, 1895, p. 220.
[519] Bulletin No. 46, Division of Chemistry, U. S. Department of Agriculture, p. 37.
[520] Landwirtschaftliches Jahrbuch, 1872, part 1.