CONTENTS 



" Available " Phosphoric Acid and Potash. 



PA.OK 



87. Citric Acid Extraction . . . . .103 



Statement of Results. 



88. Alluvial Soil (Kent) 104 



SECTION III.— FERTILISERS AND 

 MANURES 



CHAPTER X 

 Artificial Nitrogenous Manures 



Sulphate of Ammonia. 



89. Ammoniacal Liquor ..... 105 



90. Sulphate of Ammonia . . . . .106 



Nitrate of Soda. 



91. Qualitative Examination of Nitrate of Soda . . 108 



92. Analysis of Nitrate of Soda .... 108 

 93-95. Estimation of Nitrogen in Sodium or Potassium 



Nitrate — 



{a) Nitrometer Method . . . .110 



{p) Schlossing's Method . . . .112 



{c) Estimation by Reduction to Ammonia . 1 14 



96. Presence of Perchlorates in Nitrate of Soda . .114 



Nitrate of Lime. 



97. Hygroscopicity of Nitrate of Lime , . .115 



Calcium Cyanamide or Nitrolim. 



98. Qualitative Examination . . . . .116 



99. Analysis of Nitrolim . . . , . Ii6 



