PLATE XXII 
Fig. i.—Rape plants, showing influence of sulphates on growth, i, Check; 2, 
nitrogen, phosphorus, potassium; 3, nitrogen, phosphorus, potassium, plus sulphur 
as sodium sulphate; 4, nitrogen, phosphorus, potassium, plus sulphur as calcium 
sulphate; 5, sodium sulphate only; 6, calcium sulphate only; 7, elemental sulphur 
only. 
Fig. 2.—Barley plants, showing influence of sulphates on growth. 1, Check; 2, 
nitrogen, phosphorus, potassium; 3, nitrogen, phosphorus, potassium, plus sulphur 
as sodium sulphate; 4, nitrogen, phosphorus, potassium, plus sulphur as calcium 
sulphate; 5, sodium sulphate only; 6, calcium sulphate only; 7, elemental sulphur 
only. 
Fig. 3.—Oat plants, showing influence of sulphates on growth. 1, Check; 2, 
nitrogen, phosphorus, potassium; 3, nitrogen, phosphorus, potassium, plus sulphur 
as sodium sulphate; 4, nitrogen, phosphorus, potassium, plus sulphur as calcium 
sulphate; 5, sodium sulphate only; 6, calcium sulphate only; 7, elemental sulphur 
only. 
