APPENDIX VI
*7«
are protected from erosion by the hooks. Consequently, the materials of the lee fringe remain quiescent till fresh shingle is shot down from the crest. The intervals of quiescence in recent years have been long enough for the establishment of Suaeda bushes. The conditions at b resemble those at e— the fans remain and Suaeda establishes. This type of lee fringe is represented on the diagram (fig. 54, B and e) by an unbroken sinuous line, the Suaeda plants by dots following the scalloped edge.
  2.	Open Bays (Section c).—These occur east and west of
OPEN SEA
Fig\ 54.—Diagram Map of Blakeney Main Beach from the Reclaimed Marshes to the Hood, showing the distribution of Suaeda bushes in zones (rows of dots 1, a, and 3)
The different types of the lee edge referred to in the text occur opposite the letters a to H.
A, beach bordered by dune; b and E (sinuous line), dormant fans; c and F (broken line), edge eroded by scour; D, place of accumulation of shingle drifted east from section c; o, beach bordered by sea-wall; H, shingle fan projecting through breach in sea-wall.
the Hood. The lee fringe is not protected by hooks and is liable to scour when the wind blows from the south or southwest. A shingle talus develops in the usual way but is eroded by the waves—the products of erosion in the case of Section c being transported mainly into the eastern corner of the bay at D. The broken line at c indicates this non-permanence of the fans. Suaeda bushes have failed to establish along the section, not from want of inoculation—which is perfectly ade quate—but because the ground at and immediately below the spring-tide mark has proved too unstable for seedlings to retain a footing.
  A change, however, is overtaking this section. In 1913 a line of seedlings could be traced along the talus extending east from Section b for some 200 yards, a position where pre-