Inorganic Plant Poisons and StimulantsNote 5 — Chapter IV · EFFECT OF ZINC COMPOUNDSReading edition44 mg. ZnSO4 . 7H2O = 10 mg. Zn = 1/22,727 ZnSO4 . 7H2O approx.◇Copy noteReturn to CHAPTER IV EFFECT OF ZINC COMPOUNDS