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 47
... employed in it . Geodesy , as a practical art , falls into two main divi- sions , in each of which there are peculiar difficulties to be surmounted : the first of these regards the measure- ment of base - lines ; the second , the ...
... employed in it . Geodesy , as a practical art , falls into two main divi- sions , in each of which there are peculiar difficulties to be surmounted : the first of these regards the measure- ment of base - lines ; the second , the ...
Page 48
... employed , if such juxtaposition be not by some contrivance rendered unnecessary . It is obvious that the errors of measurement , supposing the measuring apparatus itself to be perfect , are apt to increase with the number of times that ...
... employed , if such juxtaposition be not by some contrivance rendered unnecessary . It is obvious that the errors of measurement , supposing the measuring apparatus itself to be perfect , are apt to increase with the number of times that ...
Page 51
... the interests of science , and directed mainly to the determination of the figure of the earth . The measures employed in measuring the Hounslow base were Ramsden's steel chain , 100 feet long ; D 2 THE ORDNANCE SURVEY . 51.
... the interests of science , and directed mainly to the determination of the figure of the earth . The measures employed in measuring the Hounslow base were Ramsden's steel chain , 100 feet long ; D 2 THE ORDNANCE SURVEY . 51.
Page 54
... employed in the work of triangulation and base measurements , there was another employed in filling in the spaces within the larger triangles by a system of smaller ones , and yet another employed as draughtsmen in embodying in maps the ...
... employed in the work of triangulation and base measurements , there was another employed in filling in the spaces within the larger triangles by a system of smaller ones , and yet another employed as draughtsmen in embodying in maps the ...
Page 55
... employed in the survey . The life of the officers who went " out " in the sur- veying season was an exceedingly trying one . It was a life of hardship and exposure ; of frequent privation and fatigue ; occasionally of hazard and ...
... employed in the survey . The life of the officers who went " out " in the sur- veying season was an exceedingly trying one . It was a life of hardship and exposure ; of frequent privation and fatigue ; occasionally of hazard and ...
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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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Administration apparatus appears appointed Argand Argand burner Argand lamp bars became Bill boroughs Captain Catholics chief Colby Colonel Commissioners common compensation considerable constables constabulary course crime Crown direction districts Drum Drummond light Dublin duties Edinburgh effect engaged England English Excellency experiments favour force Government heliostat honour House improvement inquiry interest Ireland Irish juries jurors justice labour land landlord Larcom letter light lighthouse lines Lord Althorp Lord John Russell Lord Lieutenant Lord Melbourne Lord Morpeth Lord Normanby Lough Foyle magistrates Maziere Brady measure ment mond Morpeth mother object observation occasion officers organisation outrages Parliament party passed persons police political population present principle proceedings question railways reflector regard Report respect result Ribandism Roden Committee says Secretary society Survey tanistry tenants Thomas Drummond tion Tipperary triangulation Trinity House whole Woolwich