VI 11 CONTENTS. 



BULLETIN "D." 



ABSORPTION OF WATER-SOLUBLE SALTS BY DIFFERENT TYPES. 



PAGE 



On the extent of the power of soils to absorb ammonia 114 



Observations of Way 114 



Observations of Voelcker 115 



The power of soils to retain ammonia 117 



Observations of O. Kullenberg 118 



Absorption of potash by soils 120 



Observations of Voelcker 120 



Observations of Way 122 



Observations of E. Peters 123 



Recovery of absorbed potash 125 



Observations of O. Kullenberg 130 



The absorption of soda, lime and magnesia from solutions by soils 132 



Absorption of soda 132 



Observations of Voelcker 132 



Observations of Kullenberg 133 



Absorption of lime and magnesia 134 



Absorptive power of soils for phosphoric acid 136 



Observations of O. Kullenberg 136 



Observations of Voelcker 137 



Absorption by soils of sulphuric and nitric acids and of chlorine. . 138 



Comparative study of the absortive power of 8 soil types 139 



Methods of observation 140 



Absorption of salts by the Janesville Loam 140 



Absorption of salts by the Hagerstown Loam 144 



Absorption of salts by washed sands 149 



Absorption of salts by 8 soil types from dilute manure solution. 153 

 Comparison of yields with the amounts of absorbed and dis- 

 solved salts 157 



Absorption of salts by 8 soil types from a solution of acme 



guano 158 



Absorption of salts from a prepared chemical solution by 8 soil 



types after having been 11-times washed in distilled water. 161 



Absorption of salts by black marsh soil 163 



