LIST OF PLATES
Plate	Page
I.	Progressive Underwater Erosion, River Thames	10
II.	River Thames, Cross-sections: Long Reach and St.
Clement’s Reach ..-..--22
  III.	Pea Plant growing in a Water-culture Solution, with
Extensive Development of Root-system - - - 44
  IV.	1. The Scolt Head Dune Massive; 2. Young Dunes,
Blakeney Point -.--..--58
V. Dunes Colonized by Carex arenaria and Salix repens,
Coxyde, Belgium ....-.-62
VI. Wandering Dunes --------66
 VII. Dune Planting at Port Fairy, Victoria	84
  VIII. 1. Embryo Psamma Dune at Blakeney Point; 2. Wandering Dune at Southport ------ 86
 IX.	The Chesil Bank -------96
X.	Shingle Plants - -- -- ...-98
 XI.	Views of Tamarisk Hedge ------- n6
  XII.	Elevation of Timber Gantry for shutting up River Breach- 140
 XIII.	Elevation of Typical High Groyne ----- 140
  XIV.	Boundary between High and Low Salt Marsh - - - 166 XV.	Algae as Pioneers on Mud- ------ X72
XVI. Obione portulacoides - -- -- -- - jyg
XVII. Clumps of Spartina Townsendii, invading Holes Bay, Poole
Harbour, 1912......Frontispiece
XVIII. Spartina Townsendii ------- - jg0
XIX. Hummock Development (Bouche d’Erquy, Brittany) - 190
 XX.	Bouche d’Erquy, Brittany ------- ¡q2
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