716 [=77] (V.2)

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716

country water, and to throw
the drainage away from the
works, rather than to give it any
encouragement to approach
near them. In all cases where
the irregularity of surface drain-
-age, and the tortuous course
of the natural watershed, have
been intersected by the straight
alignment of the canal,
measures have either been taken
or are to be taken for the effective
relief of the flood water by cuts
made into its neighboring river.
In no case ought this rule in
my opinion to be deviated from,
the beds of the natural rivers
ought to be considered as the
true escapes, and the canal
channel ought to be confined
to its own especial duties. My
views of the equilibrium that
will be maintained in the
surface water by the connection
of the main canal and its
branches with the subordinate
lines of Rajbuha have been
fully entered into in the chapter
describing the Rajbuha's, and
their double objects of irrigation
and safety valve. It is suffi-
-cient to advert here to the fact
that during rain the amount
of water collected by direct in-
cidence, as well as that pouring
into the canal channel through
the bridge inlets which from their
position it may be noticed are
capable of being entirely restricted
to the Rajabuha's themselves; will
add sufficiently to the supply
of water passing down the chan-
-nel

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