Axmen were
at once set at work to reopen this avenue, under the supposition that
the due north line would at least fall within its borders for a distance
of 12 miles. In the meantime the first astronomical station and camp
were established, and the transit instrument set up at a distance of
4,578 feet north of the monument, upon an eminence 45-1/2 feet above
the level of its base. This position commanded a distinct view of
the monument to the south, and of the whole line to the north for
a distance of 11 miles, reaching to Parks Hill. Whilst the work of
clearing the line of its young growth of timber was progressing a
series of astronomical observations was commenced at this first camp,
and continued both day and night without intermission (except when
interrupted by unfavorable weather), with the sextant, the repeating
circle of reflection, and the transit instrument, until the latitude and
longitude of the monument and of this first camp were satisfactorily
ascertained, and also the direction of the true meridian from the said
monument established.
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