716 
BLAKENEY POINT IN 1913. 
so-called permanent features were but phases, and directed 
attention especially to the nature and effects of change. 
All topographical studies on such an area as Blakeney Point 
are really developmental studies, and this gives the key-note to 
a considerable section of the work there in progress. 
For the tracing of these changes or “successions” in 
vegetation, mapping on a much higher scale (l in 60, 1 in 20, 
etc.) had to be employed, so that the actual positions of single 
plants or groups could be represented. The selection of areas 
for these operations, and the scale employed, depend on the 
object in view, viz., the tracing of stages in the establishment 
and succession of vegetation — an object for which the continual 
change and growth of Blakeney Point is eminently favourable. 
Apart from the vegetation changes, wherever new or 
modified physical features are presenting themselves these are 
mapped by the plane table or other method, as in the cases of 
the Samphire Marsh, the New Beaches off the Headland, and 
the New Hook on the Long Hills. 
Floristics. 
Pari passu with the vegetation mapping, the individual 
species of plants have been collected and identified by the 
“ Floristic Section,” and the distribution of each followed out 
in detail over the area. About 120 species of flowering plants 
have been recognised. The results of this part of the work 
have been set forth in Publication No. 7. At the same time 
the various soils have had to be studied and in part mapped 
and analysed. With the aid given by experts from the 
Rothamsted Station, considerable progress has already been 
made in this department. 
Special Investigations. 
The general overhaul of the plants of the area has led to 
special investigations into various features of interest shewn 
by individual species. 
Thus, Silene maritima was found to exhibit striking 
polymorphism in floral structure, no less than seven recognisable 
