Memoir of Thomas Drummond, R.E.,F.R.A.S., Under Secretary to the Lord Lieutenant of Ireland, 1835-1840 |
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Page 51
The French had by this time carried a series of triangles from Paris to Calais , and
what they proposed was that the English should carry a similar series from
Greenwich to Dover , when the two might be connected by observations from
both ...
The French had by this time carried a series of triangles from Paris to Calais , and
what they proposed was that the English should carry a similar series from
Greenwich to Dover , when the two might be connected by observations from
both ...
Page 54
They not only required great skill in scientific observations , but the employment
of immense personal energy . Captain , afterwards Colonel Colby , had by this
time been long associated with Colonel Mudge in the survey , and possessed all
...
They not only required great skill in scientific observations , but the employment
of immense personal energy . Captain , afterwards Colonel Colby , had by this
time been long associated with Colonel Mudge in the survey , and possessed all
...
Page 55
The duties were twofold - station - hunting , and the work of observation . A
country was to be rapidly traversed -- for every day in the season was of
valueand hill after hill to be ascended till the most eligible for a station of
observation was ...
The duties were twofold - station - hunting , and the work of observation . A
country was to be rapidly traversed -- for every day in the season was of
valueand hill after hill to be ascended till the most eligible for a station of
observation was ...
Page 56
Here for some time Colby devoted to the work of observation every favourable
moment from sunrise to sunset . In the intervals he instructed his assistants in the
use of the instruments . Though the month was June , it was far from being ...
Here for some time Colby devoted to the work of observation every favourable
moment from sunrise to sunset . In the intervals he instructed his assistants in the
use of the instruments . Though the month was June , it was far from being ...
Page 57
... owing to the tremulous state of the atmosphere , it is unfavourable for
instrumental observations , except occasionally for ... mountain chances to be
free from clouds and mist , nothing really valuable , in the way of observation ,
can be done .
... owing to the tremulous state of the atmosphere , it is unfavourable for
instrumental observations , except occasionally for ... mountain chances to be
free from clouds and mist , nothing really valuable , in the way of observation ,
can be done .
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Memoir of Thomas Drummond, R. E. , F. R. A. S. , Under Secretary to the Lord ... John Ferguson McLennan No preview available - 2020 |
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