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BROWN SEAWEEDS OF THE SALT MARSH. 391 
EXPLANATION OF THE PLATES. 
PLATE 8. 
. General view of part of the salt marshes at Blakeney Point, Norfolk, looking from 
the dunes in a southerly direction across the entrance to Blakeney Harbour. The 
flat in the middle of the picture, between the two shingle-banks, is mainly covered 
by Pelvetia in association with Salicornia europea. In the distance is seen the 
mainland between Morston and Sliffkey. The greater part of the picture is charted 
in text-fig. 1. (From a photograph by Prof. Е. W. Oliver.) 
. Pelvetia growing among Salicornia europea. About го natural size. At a a 
characteristic piece of Pelvetia is visible. (From a photograph by Mr. Е. J. 
Salisbury.) | 
. View of a stream in the marsh at Mersea Island, Essex, with Fucus volubilis plants 
along the banks. (From a photograph by Mr. G. S. Baker.) 
` PLATE 9. 
. Plant of Fucus volubilis growing on the mud at Mersea Island. About the 
S 
natural size. (From a photograph by Mr. G. S. Baker.) 
. Transverse section of a g conceptacle of F. volubilis. X 54 diam. The ostiole has 
sprung open owing to the delicacy of the surrounding tissue. 
. Transverse section of a 9 conceptacle of F. volubilis. x 54 diam. Fig. ба shows 
an oogonium divided into three, in section ; the other oogonia are undivided 
