xviii CONTENTS 



CHAPTER III 



THE LESSON OF THE BRITISH FLORA 



Results of observations on the buoyancy of over 300 British plants. The small 

 proportion of plants with buoyant seeds or seedvessels. Their station by 

 the water-side. The great sifting experiment of the ages. Summary. 



Pages 23 30 



CHAPTER IV 



THE LESSON OF THE BRITISH FLORA (continued} 



The choice of station of the water-side plant possessing buoyant seeds or seed- 

 vessels. Determined by its fitness or unfitness for living in physiologically 

 dry stations. In the internal organisation of a plant lies the first de- 

 termining influence of station. The grouping of the British strand-plants. 

 Whilst the Xerophyte with buoyant seed or fruit finds its station at the 

 coast, the Hygrophyte similarly endowed makes its home at the river or 

 pond side* The grouping of the plants of the river and the pond. 

 Summary Pages 31 39 



CHAPTER V 



THE FIJIAN STRAND-FLORA 



The inland extension of the beach-plants. The grouping of the coast-plants. 

 Their modes of dispersal. The zone of change. Summary. Pages 40 46 



CHAPTER VI 



THE TAHITIAN STRAND-FLORA 



(From materials supplied mainly by the work of Drake del Castillo] 



Lacks the mangroves and their associated plants. Possesses mainly the 

 plants of the coral beach. Predominant agency of the currents. Inland 

 extension of shore-plants. Summary Pages 47 50 



CHAPTER VII 



THE HAWAIIAN STRAND-FLORA 



Its poverty. Its negative features. Their explanation. The subordinate part 

 taken by the currents. The Oregon drift. The inland extension of the 

 beach-plants. Summary Pages 51 60 



