[238] Vid. op. et loc. cit. supra.
[239] Benedikt and Lewkowitsch; Oils, Fats, and Waxes, pp. 96 et seq.: Zune; Analyse des Beurres, pp. 26 et seq.
[240] Journal of the Society of Chemical Industry, 1885, p. 535.
[241] Vid. op. cit. 1, p. 97.
[242] Vid. op. cit. 7, p. 443.
[243] Vid. op. cit. 1, pp. 97 and 98.
[244] Butter, its Analysis and Adulterations, p. 24.
[245] Bulletin No. 46, Division of Chemistry, U. S. Department of Agriculture, p. 34.
[246] Vid. op. cit. 7, p. 447.
[247] Analyse des Beurres, pp. 33 et 63: Zeitschrift für Instrumentenkunde, 1887, Ss. 16, 55, 392, 444: Zeitschrift für physikalische Chemie, Band 18, S. 294. (Ou. pp. 328-9 and 334 read Amagat for Armagat.)