193 
The Bouclie d'Erquy in 1906. 
soils, respectively. The results obtained should pave the way to an 
elucidation of a number of phenomena relating to plant-growth on 
the Bouche which have not as yet been the subject of systematic 
enquiry. 
In addition to this, the same Section devised many experiments 
with a view to tracing the way in which seeds are scattered through 
the action of the tides. Direct observation of seed-dispersal being 
possible only in winter, recourse was had to the indirect method of 
Fig. 31. Outside the Laboratory : osmotic determinations in progress (1906). 
denuding suitable areas of some one plant or of its whole covering 
of vegetation. By noting next year the number and position of the 
new plants on these areas it should be possible to draw conclusions 
as to the relation which the general seed-dispersal holds to the 
mere dropping of seeds at the base of the parent. 
Sections F and G, concerned with physiological and chemical 
work, respectively, had as head-quarters the laboratory installed 
last year in the main room of an empty cottage by the border of 
the marsh. 
