viil CONTENTS 



CHAPTER IV 



GRASSLAND ASSOCIATIONS 



Distribution of the grassland. Types of grassland. I. Grassland of the 

 sandstones and shales : siliceous grassland ; (1) Nardus grassland ; 

 mixed siliceous grassland ; (2) Molinia grassland. Eelationships of 

 the plant associations of the siliceous soils. II. Grassland of the 

 limestone : calcareous grassland ; mixed calcareous grassland : tran- 

 sitional calcareous grassland. Calcareous heath. Pseudo-calcareous 

 heaths. Species of the calcareous grassland and the siliceous grass- 

 land. Relationships of the plant associations of the siliceous and the 

 calcareous soils. pp. 103-133 



CHAPTER V 



ASSOCIATIONS OF ROCKS AND SCREES 



The limestone cliffs : limestone screes. Sandstone rocks and screes. Are 

 the plants of cliffs and screes lithophytes ? pp. 134-143 



CHAPTER VI 



MARSH AND AQUATIC ASSOCIATIONS 



General distribution of the marsh (or swamp) and aquatic associations. 

 Non-calcareous waters. Swamps on the sandstones and shales. Cal- 

 careous waters. Swamps on the limestone. Ruderal marsh species. 

 Reed swamps. The vegetation of quickly flowing streams. Alien 

 aquatic plants. The relation of calcium salts to the flora and vege- 

 tation, pp. 144-162 



CHAPTER VII 



MOORLAND ASSOCIATIONS 



General distribution of moorland. Classification of moorland associations. 

 The fen formation. " Hochmoor " and " Flachmoor." Moors and 

 fens. Bryophytes of the moors. Factors related to the distri- 

 bution of the moorland associations. Heather moors. Transitional 

 association of heather moor and siliceous grassland. Bilberry moors. 

 Transitional association of heather moor and bilberry moor. Cotton- 

 grass moors. Transitional association of cotton-grass moor and 

 siliceous grassland. Transitional association of heather moor and 

 cotton-grass moor. Retrogressive moors. The Peak of Derbyshire. 

 Bare peat. Sub- Alpine grassland. Zonation of the moorland and 

 grassland associations. List of species of the moor formation. 



pp. 163-198 

 CHAPTER VIII 



CULTIVATED LAND : CULTURE ASSOCIATIONS 



Origin of the cultivated land. Nature of the cultivated land. Perma- 

 nent pasture. The arable land. Plantations. Afforestation. Utili- 

 zation of the peat-moors. pp. 199-213 



