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

by Harvey Washington Wiley

[228] Watt’s Translation, Vol. 2, pp. 317-318.

[229] Manuscript communication from Mr. Kreider.

[230] Vid. op. et loc. cit. 43.

[231] The residue showed phosphoric acid plainly when tested.

[232] The residue showed phosphoric acid plainly when tested.

[233] Only traces of phosphoric acid found in the residue.

[234] Only traces of phosphoric acid found in the residue.

[235] Only traces of phosphoric acid found in the residue.

[236] Only traces of phosphoric acid found in the residue.

[237] Zeitschrift für angewandte Chemie, 1893, S. 73.