250 
MR. A. G. INNES ON TIDAL ACTION IN 
TABLE III. — THURNE RIVER. 
September 12th, 1906. 
Sample taken at 
Going up Stream. 
Going down Stream. 
Time. 
Salinity. 
Time. 
Salinity. 
Thurne Mouth 
NOON. 
12 O 
5-73 
P.M. 
4 16 
10.02 
About 200 yards above Thurne 
Staithe .... 
— 
4 9 
19.22 
Cut to Womack Water . 
12 20 
19-3 
3 59 
20.79 
Potter Heigham Bridge . 
12 43 
23.67 
3 48 
25.10 
Half-way between Potter 
Heigham and Candle Dike . 
12 52 
25-77 
3 27 
28.12 
Entrance to Candle Dike 
1 3 
28-57 
3 18 
46.66 
Lower end of Heigham Sounds 
I IO 
25-34 
3 12 
31-56 
Lower end of Meadow Dike 
2 3 
50.08 
3 ° 
42.65 
Deep Dike .... 
I 20 
43-73 
Whiteslev .... 
1 23 
46-56 
— 
— 
Lower end of Hickling Broad . 
1 55 
46.20 
— 
— 
Meadow Dike, near Horsey 
Mere .... 
2 25 
51-43 

In Horsey Mere 
2 36 
53-8 
High Water at Thurne Mouth about 6 a.m. 
Continuing up the Thurne River there is a further steady 
rise, and when Deep Dike is reached one finds over 40 grains 
to the gallon. Since no salt water from Yarmouth gets beyond 
Acle the Thurne River must be regarded as tidally isolated, 
being cut off from the sea by the reach of the Bure between 
Acle and Thurne Mouth. In view of this, the high salinities 
recorded in Table III. can only be due to the saline character 
of the Broads at the head of the river. Certain of the Broads 
were fully investigated by Mr. Sutton, in 1892, in connection 
with the Hickling Broad Case. These results are reproduced 
here in Tables IV., V., and VI. 
TABLE IV.— HICKLING BROAD (F. Sutton). 
January 30th, 1892. 
Time. 
Sample taken from 
Salinity. 
Nudd’s Corner ...... 
32.93 
— 
Mid Channel ....... 
34-29 
— 
Deep-Go Dike ....... 
48.19 
Barber’s Drain (a dike inside the banks and un- 
connected with the Broad) .... 
Nudd’s Well 
16.43 
25-75 
Hill Common Drain (a dike unconnected with the 
Broad) ........ 
4-95 
