Contents 



CHAPTER XI 



RECONQUEST OF THE WATER 



PAGE 



Marsh plants and oxygen — Aerated tissues — Florida hyacinth — Phrag- 

 mites — Pondweed leaf — Flowering of Elodea — Waterfowl and 

 seeds — Trapella — Colonising of water by plants — Reed thickets — 

 Marsh plants and seeds — Waterlily zone — Abysms — Deepwater 

 algoe — Hay meadows — Sudd of Nile — Ganges and Amazons — 

 Hylaea — Pampean sea — Submerged worlds of loch — Water lobelia 

 association — Bankfoot colonisers — Cladophora in rivers — Apodya 

 — Polluted water 125 



CHAPTER Xn 



SENSE-LIFE AND SENSIBILITY 



Anthropomorphism — Protoplasmic threads — Nanna and its critics — 

 Breadfruit and Infusorian — Emotional distribution — Maeterlinck's 

 laurel — Sunlight sensitiveness — Lenslike cells — Photographs by 

 plant-cells — Hoemanthus — Gravity on Solomon's seal — Statolith 

 theory — Tendrils — Barberry stamens — Heckel's operation — 

 Chemical sensitiveness — Bacilli and taste — Sundew and nepenthes 

 —Massacre of butterflies 140 



CHAPTER Xni 



THE INDIVIDUAL PLANT 



Sacrifice of old leaves — Self-surgery in leaves — Resin in an emer- 

 gency — Regeneration — Beheading of roots — Fern growing-points — 

 Torenia leaves — Germ plasma — Ceropegia internodes— Competi- 

 tion within the body of a single plant ...... 152 



CHAPTER XIV 



SEASIDES AND STRAND PLANTS 



Circulation of water — Estuarine mud — Zostera meadows — Submerged 

 pollination — Salicornia colonisation — Salt water and self-protection 

 of Salicornia — The Camargue — Armeria mudflats — Vaucheria — 

 Rushes and littoral meadow — Marine reed-thickets — Spartina — 

 Shingle beds — Sandflora — Sanddunes, formation and colonisation 

 — Psamma — Chilian sanddunes — Landes of France — The dismal 

 swamp — Spanish shores 157 



CHAPTER XV 



DESERTS 



Winds and desert — Drying up of the world — Characters of desert 

 plants — Ephemerals — Karoo — Plants like stones — Effect of rain — 

 Cactus and Euphorbias — Shrinking of Cereus — Spines of Succulents 

 — Grey hairs — Thorns and grazing animals — Cockspur thorn — 

 Gum-tragacanth — Thorny plants in moist climates — Holly — Wait- 

 a-bit Acacia — Distribution of acacia — Colonisation of deserts — 

 Welwitschia 169 



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