278 A. G Tansley. 
On Sunday, August 6th the day was spent among the maritime 
formations of Blakeney Harbour, under the guidance of Professor 
F. W. Oliver. The main feature of interest here is the great 
shingle bank which stretches for miles along the coast and protects 
the estuary of the Glaven (Blakeney Harbour) in which salt-marsh 
vegetation has developed. Lateral shingle beaches stretch land¬ 
ward from the main bank, and represent successive inwardly turned 
terminations of the main bank, which has gradually extended west¬ 
wards along the coast. In the bays enclosed by these lateral banks 
successive stages in the development of salt-marsh formation, from 
the open association of Salicornia europcea with unrooted Pelvetia 
canaliculata to the general salt-marsh association. On the shingle 
beach itself Suceda fruticosa, which often forms dense thickets two 
feet or more high, flourishes abundantly. This is apparently its 
most northernly station in the British Isles. Arenarici peploides, 
Silene maritima and Ruinex crispus var. trigranulatus are the other 
plants which are most abundant on the shingle-beach, while Mer- 
tensia maritima, the Oyster-plant, with its fleshy leaves simulating 
pebbles here occurs at the southern extremity of its range on the 
east coast. Limonium bellidifolium (Statice reticulata ) occurs where 
mud has been deposited on the shingle and Limonium binervosum in 
other places. Sand dunes have accumulated in places on the top 
of the shingle, and the process of the formation of these by the 
accumulation of sand round seedling plants of Ammophila arenaria 
can be observed. After lunch at Blakeney Point, the party sailed 
across on the high tide to Blakeney, and drove from there to 
Morston. From here Stiffkey salt-marshes and “ meols ” (sand 
dunes) were visited on foot, and the associations of Glyceria mari¬ 
tima and jfuncus maritimus (later developments of the salt-marsh 
formation not to be observed in Blakeney Harbour itself) were 
observed. A baautiful example of the gradual destruction of the 
G/ycma-association by wave erosion occurs here. In the evening 
the party drove back to Holt. 
On Monday morning, August 7th, the party travelled from Holt 
to Derbyshire, obtaining a good idea of the general features of East 
Anglia and the Midlands en route. The railway passed at first over 
the varied, generally light soils overlying the chalk of West Norfolk 
and then across the drained and cultivated Marshland and Fenland 
south of the Wash. At Peterborough the Fenland was left and the 
rolling Jurassic clays of the east Midlands with their abundant 
pasture, now much browned by the long drought, and occasional oak- 
hazel woods, entered upon. Changing at Leicester much the same type 
of country, in the valleys of the Trent and its tributaries, was passed 
through, till the great massif of the Southern Pennines was entered 
near Belper. Along the course of the Derwent valley the Mountain 
limestone lay to the west, and the siliceous rocks of the Coal 
Measures and Millstone Grit with extensive areas of moorland to 
the east. At Miller’s Dale station the party alighted and drove to 
Litton on the limestone plateau, walking thence down Cressbrook 
Dale to Monsal Dale under the guidance of Dr. Moss. In Cressbrook 
Dale limestone pasture, limestone scrub and ashwood were succes¬ 
sively passed through, and much discussion took place as to the true 
relationships and status of these communities. On the limestone 
