Principles and practice of agricultural analysis. Volume 2 (of 3), Fertilizers

by Harvey Washington Wiley

[25] Vid. op. cit. supra, 1889, p. 636.

[26] Vid. op. cit. 24, 1891, p. 3.

[27] Rapports presentèes au Congrès International de Chimie Appliqué, Bruxelles, Août, 1894, p. 26.

[28] Vid. op. et loc. cit. 20.

[29] Le Stazioni Sperimentali Agrarie Italiane, Vol. 23, p. 31.

[30] Crookes’ Select Methods, p. 538.

[31] Journal of Analytical and Applied Chemistry, Vol. 5, p. 671. For additional authorities on these methods consult Meyer and Wohlrab, Zeitschrift für angewandte Chemie, 1891, Ss. 170 und 243. Gruber, Zeitschrift für analytische Chemie, Band 30, S. 206. Shephard, Chemical News, May 29, 1891, p. 251. Vögel, Zeitschrift für angewandte Chemie, 1891, Band 12, S. 357.

[32] Journal of the American Chemical Society, April, 1895.

[33] Vid. op. cit. 21, p. 150.

[34] Transactions of the American Institute of Mining Engineers, Vol. 21, p. 170.