io6 Study and Survey of British Vegetation. 
with much precision the glaciated from the non-glaciated areas, and 
to see that the vegetation has been influenced by this. A comparison 
between a varied selection of geological strata and the vegetation 
shows that plant-distribution is more uniform than geological. The 
distinguishing plant-formation of the extensive moorlands is Calluna- 
heath on very shallow peat, the occasional occurrence of deeper 
peat enabling one to see its influence. The district has also proved 
a good one for investigating the distribution of trees and bracken, 
which are entirely confined to valleys, valley-slopes and escarpments, 
so that the upper limit depends on the change from deep-soiled 
slopes to shallow-soiled plateau, a limit which may vary from 800 to 
1,200 feet according to topography. The long extent of coast line 
is mainly composed of Boulder Clay or Oolite or Lias Cliffs with 
grass and scrub and occasionally a coast-wood, while salt-marsh and 
sand-vegetation is very limited in extent. 
Mr. C. E. Moss dealt with the Vegetation of Somerset, briefly 
explaining the chief features of this memoir, which has since been 
published by the Royal Geographical Society (see New Phytologist, 
February, 1907). 
The progress of ecological work at Erquy in 1906 was described 
by Professor F. W. Oliver. The need for prolonged observations 
on a limited area has been demonstrated by the exceptional drought 
of 1906, which has had a remarkable effect on the diminished size 
and increased numbers of annual species like Salicornia and Suceda. 
The results of transplantation of salt-marsh plants from a habitat 
of one kind to that of another character were also given. The 
work at Erquy always attracts attention at the Meetings since it is 
the pioneer effort in a direction which is increasing in importance, 
and must receive more and more attention from ecologists. (See 
New Phytologist, October, 1906). W.G.S. 
