p. 114

The same miller informs us that he uses an equivalent of about 400 inches of water, under a head of 4 feet.
[calculations for cubic feet pr second using superficial feet and velocity of water under 4 feet]

Thus agreeeing very nearly with the discharge found on the preceeding page-

The wheel used at this mill is believed to be not of the best kind-a proper wheel would doubtless do the same work with 1/3 less water. If so there is sufficent for this mill and for Milwaukee, both.

The water of the lake is now at a medium stage, being 2 1/2 lower than the highest, & 2 1/2 above the lowest stage-

Whole change of level 5 feet.