CONTENTS 
CHAPTER I 
INTRODUCTION 
General description of the Peak District. Types of scenery. Rocks and 
soils. Soils and their characteristic plants. Flora and vegetation. 
Vegetation maps. Plant communities. Vegetation maps and floristic 
maps. The value of vegetation maps. Rainfall. Smoke. Tempera- 
ture. The upper atmosphere ; temperatures ; direction of the wind ; 
velocity of the wind ; humidity of the atmosphere. Note on the use 
of the words “acidic” and “basic.” pp. 1-37 
CHAPTER II 
WOODLAND ASSOCIATIONS 
Distribution of the woods. Woodland associations of Great Britain. 
Woodland associations of the southern Pennines. Factors related to 
the distribution of the woodland associations. Oak woods of Quercus 
Robur. Transitional woods of Quercus Robur and Q. sessiliflora. 
Oak woods of Quercus sessiliflora; trees and shrubs; variation of 
vegetation in the oak woods ; influence of shade on the ground vege- 
tation. Alder-willow thickets. Birch woods of Betula pubescens ; the 
primitive birch-forest. Ash woods of Fraxinus excelsior ; semi-natural 
woods and plantations on the limestone slopes; trees and shrubs ; 
herbaceous vegetation. Comparison of the woodland plants of the 
southern Pennines. pp. 38-87 
CHAPTER III 
SCRUB ASSOCIATIONS 
Past and present upper altitudinal limit of trees. Buried timber in the 
peat. Degeneration of woodland. Distribution of character of the 
existing scrub. Scrub in other districts. Relation of the ground 
vegetation of woodland to retrogressive scrub. Progressive and 
retrogressive scrub. Comparison of the types of retrogressive scrub. 
pp. 88-102 
