Principles and practice of agricultural analysis. Volume 1 (of 3), SoilsNote 290 — PART SEVENTH. THE ORIGIN AND ESTIMATION OF OXIDIZED NITROGEN IN SOILS, RAIN AND DRAINAGE WATERS.Reading editionOp. cit. supra, 1891, Plate 18, Fig. 1.◇Copy noteReturn to PART SEVENTH. THE ORIGIN AND ESTIMATION OF OXIDIZED NITROGEN IN SOILS, RAIN AND DRAINAGE WATERS.