529 [=542] (V.1)

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529

distance of 5 miles apart vide
Plate no VI of the atlas. Mr
Read the executive officer of
the 2nd division of the works has
on Mr Dodsworth's map as a
ground work taken a proof line
along the watershed, thereby test-
ing the levels originally taken;
Mr Read has at
every mile on the leading 155
miles established
a masonry bench mark, and to
ensure the preservation of these
fixed points which indicate
not only the true levels but the
direction upon which the excava-
tion is to be carried, he has
raised over them pyramidal
mounds of earth 8 feet in height,
to the repair and maintenance
of which his attention has been
directed.
Mr Read reports "that
"levels have been taken at every
"400 feet apart closed upon the
"masonry benchmark above
"mentioned and terminating
"at the 155th mile below the
"headworks. From comparison
"with the plans of cross sections
"and levels executed by Mr
"Dodsworth, this line of levels
"shews that it has been taken
"along the high ridge of the
"country through which it
"runs and is in everyway
"favorable for canal purposes
"beyond the point above
"alluded to (viz that at the
155th mile) the levels and line
"have

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