CONTENTS 



XV 



Questions on Chapter XIII ...... 



Laboratory Exercises ....... 



Influence of potash on plant growth, I ; Examina- 

 tion and identification of potash fertilizers and sulfur, 

 II ; Comparison of fertilizer effects on plant growth, 

 III. 



185 

 185-186 



CHAPTER XIV 



Lime 



Forms of lime, § 241 ; Absorption of lime by soils, 

 § 242 ; Lime requirement of soils, § 243 ; Effect of 

 lime on tilth, § 244 ; Effect of lime on bacterial 

 action, § 245 ; Liberation of plant-food materials, 

 § 246 ; Effect on plant diseases, § 247 ; The use of 

 magnesian limes, § 248 ; Caustic lime versus ground 

 limestone, § 249 ; Fineness of grinding limestone, 

 § 250; Gypsum or land plaster, § 251. 



Questions on Chapter XIV 



Laboratory Exercises ....... 



A study of the forms of lime, I ; Fineness of 

 ground limestone, II ; Effect of lime on biological 

 action, III; Flocculation by lime, IV; Flocculation 

 by lime, V ; Lime and the rotation, VI ; Forms of 

 lime to apply, VII. 



187-192 



192 

 193-195 



CHAPTER XV 



The Purchase and Mixing of Fertilizers 



Brands of fertilizers, § 252 ; High- and low-grade 

 fertilizers, § 253 ; Fertilizer inspection and control, 

 § 254 ; Trade values of fertilizer ingredients, § 255 ; 

 Computation of the wholesale value of a fertilizer, 

 § 256 ; Home mixing of fertilizers, § 257 ; Fertilizers 

 that should not be mixed, § 258 ; Calculation of a 

 fertilizer mixture, § 259 ; How to mix the ingredients, 

 § 260. 



196-205 



Questions on Chapter XV 



205-206 



