134 
T. G. Hill. 
night and morning of September 10th and 11th, 1905. The two 
following tables set forth the results obtained from three different 
stations 1 . 
Table l shows the amount of rainfall on the specified days, 
and the salinity of the soil-water—estimated as chlorides—taken 
from definite stations; the second table is an attempt to illustrate 
the results expressed by figures in the first table, together with 
the high tides. It may be remarked that in the second table, the 
lines connecting the various salinities of the soil-water from the 
different stations do not represent the actual curves of increase or 
decrease in these salinities; they are used merely to connect the 
points referring to the same station, in order to facilitate reading. 
It is necessary to add that station 1 is situated on a low 
plateau which is covered by a community of Glyceria maritiina, 
Suaeda maritiina and Salicornia herbacea. The level of this spot is 
sufficiently high to be untouched by tides less than about 37 feet. 
Station 6 is a pan, devoid of vegetation, the earth of which is 
argillaceous in character and is covered by tides over 39 feet. 
Station 18 is a patch of bare sand which is inundated by tides 
higher than 33 feet. Finally, the salinity of sea-water at Erquy 
is about 345%. 
TABLE I. 
Date. 
Rainfall. 
Salinity of Soil Water. 
Sept., 1905. 
Station 1. 
Station 6. 
Station 18. 
5th 
•015" 
2-77% 
6th 
•0" 
3-31% 
3-21% 
3-67% 
7th 
•075" 
— 
3-02% 
3-58% 
8th 
•0" 
— 
— 
— 
9th 
•03" 
3-35% 
— 
— 
10th 
•42" 
— 
— 
— 
11th 
•60" 
1*47% 
2-28% 
•74% 
12th 
•0" 
1-01% 
•52% 
— i 
13th 
•0" 
— 
•62% 
— 
14th 
•347" 
•79% 
242% 
It is seen that in all cases the effect of the rain was to wash 
out the salt from the soil, although the time taken varied at the 
different stations owing no doubt to the percolability and other 
physical characters of the soil. 
1 These analyses were made by the “ chemical section ” of 
the field party working under the direction of Dr. F. F, 
Blackman. 
