538 [=563] (V.1)

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538

of Establishment.

Escapes ought to be established
at a distance of 40 miles apart,
the sluices being of the same di=
mensions as those elsewhere
adopted. The width of collected
water way of each escape ought
to be rather in excess than otherwise
of the Canal Channel at the
point where the building is
erected. At the extreme end of
the irrigating line or at the 160th
mile, a work of this sort is pro=
=posed for the purpose of passing
off the tail water. Eventually
when the branch is carried for=
=ward to Futtigurh for navigation,
this excape will become an useful
regulator of the supply, it ought
I think to be made a capacious
one, with 5 sluices of 6 feet each
in width.

The want of detailed sur=
=veys of the superficial lines of
drainage and hollows, which
intersect the surface of the Country
over which the lineof Canal runs
will prevent my entering into
a description of the sub ordinate
cuts which will be required for
relieving the Canal and
the Country from intercepted
drainage. The rule however,
which I have before adverted to,
as that which has been our
guide in the main Canal works
is I believe, to be recommended;
Viz. to draw away from the Canal
alignement all intercepted water,
and to carry it by artificial
cuts into the natural lines of
drainage lying on the right and
left

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