CONTENTS 



294- 



295- 

 296, 



297. 

 298. 



Succession in residuary soils 

 Succession in colluvial soils 

 Succession in alluvial soils 

 Succession in aeolian soils 

 Succession in glacial soils 



Secondary Successions 



299 



300. Succession in eroded soils 



301. Succession in flooded soils 



302. Succession by subsidence 



303. Succession in land slips 



304. Succession in drained or dried soils 



305. Succession by animal agency 



306. Succession by human agency 



307. Succession in burned arsas . 



308. Succession in lumbered areas 



309. Succession by cultivation . . 



310. Succession by drainage 



311. Succession by irrigation 



312. Anomalous successions 



313. Perfect and imperfect successions 



314. Stabilization .... 

 Causes and Reactions 



315- . . 

 316. Succession by 



317- 

 318. 



319- 

 320. 

 321. 

 322. 

 323. 



Succession by 

 Succession by 

 Succession by 

 Succession by 

 Succession by 

 Succession by 

 Succession by 



preventing weathering 

 binding aeolian soils 

 reducing run-ofif and erosion 

 filling with silt and plant remains 

 enriching the soil . 

 exhausting the soil 

 the accumulation of humus . 

 modifying atmospheric factors 



Laws of Succession 



324. 



Classification and Nomenclature 



325. Basis 



326. Nomenclature 



327. Illustrations 

 Investigation of Succession 



328. General rules 



329. Method of alternating stages 



