99 
The Bouche cV Erquy in 1908 . 
advancing plants being Salicornia radicans, which were fairly 
numerous and of a medium size, and small plants of Suceda maritima, 
much scattered and fewer in number as compared with the Salicornia 
radicans ; the plants of Suceda became more numerous towards the 
dunes. 
On the north-eastern flank— i.e., the side towards the dunes—- 
the advance was even more marked, and the pioneer plants occurred 
in two zones: abutting directly upon the pre-existing vegetation, 
was a curved area consisting of a fairly close formation of Salicornia 
radicans and Suceda maritima, projecting twenty feet from last year’s 
front ; while beyond this there was an additional zone, where the 
soil is much looser, having a maximum width of sixty feet, and 
covered very sparsely with the same plants, of which Salicornia 
radicans was very small indeed, in fact not much advanced beyond 
the seedling stage. Also, the vegetation of the eastern flank had 
made much progress towards the dunes (Fig. 3, A). 
As regards other parts of the Bouche, there has been much 
colonisation of the sand' on the side of the old dune (Fig. 3, A, in the 
centre) in a south-easterly direction. The chief plants noted in 
this advance were a fescue, together with Euphorbia Paralias, 
Hieracium sp., and Eryugium. Further, it was noted that the 
Obione patches in line with the “ Council ” Rock were distinctly larger 
and extending over a larger area. 
With regard to the formation of hummocks and the part played 
by Salicornia radicans, attention has already been drawn (New 
Phyt., 1907, p. 250). The locality mapped in the spring of 1907 
was re-charted in September, 1908, and a comparison of the two 
(Figs. 4 and 5) shows that the advance has been maintained. The 
size of the hummocks has considerably increased, and much 
coalescence of previously isolated hummocks has taken place. 
Further, a few new hummocks have come into being, and also new 
plants of Salicornia radicans orientated transversely to the stream. 
On the other hand, many of the old hummocks have lost their 
patches of Salicornia radicans, and are covered entirely by a turf of 
Glyceria and Suceda. 
Transplantations. 
In the Autumn of 1907, two bare patches of sand, one in the 
bed of stream B and the other on a low sand-bank in the main river 
opposite the mouth of stream B, were planted with Salicornia 
radicans. The examination of these inoculations last September 
