The marked but consistent decrease of water in the creek by day and its
rise during the night having excited interest, a series of measurements
was taken, the result being somewhat astonishing. One day's readings
will suffice, for scarcely any variation from them was recorded for
weeks, concurrent meteorological conditions undergoing no sudden or
decided change while the experiment was in progress:

Sunday, November 10, 1907.

Inches.
6.30 a.m. 10 1/4
9 " 10
Noon (high tide) 6 5/8
3 p.m. 3
5.30 p.m. 1 1/2
6.10 " (sundown) 1 1/2
7.10 " 3 7/8
9 " 10 1/8


At 7 a.m. on the 11th and 12th the water stood at 10 1/4 inches and I
assume that to have been the constant level throughout the night.

The conclusion I draw (rightly or wrongly) from the fact emphasised by
these figures is that the mass of vegetation exercises a direct and
immediate effect upon the flow of water by gravitation from the
catchment. A continual and increasing demand for refreshment existing
during the day, the root spongioles are in active operation intercepting
the moisture in its descent and absorbing it, while with the lessening of
the temperature on the going down of the sun reaction begins, the stomata