Principles and practice of agricultural analysis. Volume 1 (of 3), SoilsNote 331 — PART SEVENTH. THE ORIGIN AND ESTIMATION OF OXIDIZED NITROGEN IN SOILS, RAIN AND DRAINAGE WATERS. (continued 3)Reading editionChemical News, 1890, Jan. 10, p. 15.◇Copy noteReturn to PART SEVENTH. THE ORIGIN AND ESTIMATION OF OXIDIZED NITROGEN IN SOILS, RAIN AND DRAINAGE WATERS. (continued 3)