This necessitated building a trough line 35
feet long. Ten feet of this line were already provided in the top of the
tall tower. This tower was now set up in place with the legs firmly wedged
into holes excavated in the bottom of the river. The legs on the shore
side were sunk a little deeper, so as to tilt the trough slightly
shoreward. The outer end of the trough was about 12 feet above the level
of the water. We needed but one more tower to support the remainder of the
trough line. This tower was built like the first one, but was much
shorter, as it was erected on land and the level of the trough at the top
had to be 5 or 6 inches lower so as to make the water flow. We connected
the towers by another V-shaped trough section. This we nailed to the under
side of the first trough and to the inside of the second trough. The
latter was then in the same way connected by a trough section with the
upper filter barrel. We now rigged up our shorter tower about a foot from
the taller one, wedging in the legs so that the top came level with the
slotted boards of the other tower.
Mounting the Water Wheel.
Then came the task of mounting our wheel in place. We were working in a
pretty strong current and found it no easy matter.
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