The Bouche d'Erquy in 1906. iQi 
stood out this year from the turfy covering hardly at all and had 
lost all value as a feature in the scenery. The annual Susedas and 
Salicornias in their various forms reached on the average only£—^ 
of their usual height, Correlated with this failure to expand, the 
individual plants, though small, were found to be present in such 
great numbers as to occasion difficulty in re-charting quadrats on 
the scale found suitable the preceding year. The numbers in some 
cases were comparable to those shown by seedlings early in the 
season before competition for space becomes acute. The expla¬ 
nation is doubtless to be sought in the prolonged drought and 
P'ig. 30. View inside the Laboratory, with equipment for chemical and 
physical work (1906). 
consequent high soil-salinities that have ruled this year. The 
daily records of rainfall on the area, taken for us by a local pro¬ 
prietor, shew an average of ‘6 in. monthly for the three months pre¬ 
ceding the visit. Evidently the sea-water, which covers the marsh 
some twenty times a month, is inadequate to bring the vegetation 
to its full development—a conclusion which quite accords with the 
results of several series of cultivations carried out in London on 
seedling halophytes during May and June. 
The other feature of mark was the partial replacement of the 
“apple-green” Salicornias by the crimson type. In explanation it 
may be mentioned that the surface of the marsh is marked by 
shallow undulating channels and isolated depressions, which in 
