244 
MR. A G. INNES ON TIDAL ACTION IN 
XI. 
TIDAL ACTION IN THE BURE 
AND ITS TRIBUTARIES. 
By A. G. Innes, B.A. (Oxon.), Ph.D. (Zurich). 
(Communicated by Mr. R. Gurney.) 
Read 28th February, 1911. 
SECTION I. 
Introductory. 
The following paper is an attempt to trace the extent to 
which the chemical composition of the water of the River 
Bure is affected by the ebb and flow of the tide at Yarmouth, 
and to examine the secondary effects produced in the higher 
reaches of the river and its tributaries the Ant and the Thurne 
River. 
Observations bearing on this question have been made for 
several years at Sutton Broad Laboratory, and full records 
of the results kept. Further investigations were undertaken 
by Mr. H. Peel in the Spring of 1906, as well as by the present 
author in the Autumn of the same year. In this year also the 
Great Yarmouth Waterworks and the Lowestoft Water and 
Gas Companies sought Parliamentary powers to supply 
Yarmouth with water from the River Bure. The speeches 
made, and the evidence taken, which are published as Parlia- 
mentary papers, contain a great deal of matter bearing upon 
the question of tidal action in this region. Of great importance, 
also, is the work of Mr. Francis Sutton, in connection with the 
Hickling Broad Case in 1892. Some of his results are published 
here by the kind permission of Messrs. Worship and Rising. 
The conclusions arrived at are in each case based upon the 
results of chemical analyses of the waters under consideration, 
and the present paper will, therefore, consist in the repro- 
duction of these results of analyses with some discussion of 
the inferences to be drawn from them. 
