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 vi
... BASE AT LOUGH FOYLE , • CHAPTER IX . 79-112 THE ORDNANCE SURVEY - MR DRUMMOND'S HEALTH - THE DRUM- MOND LIGHT , AND LIGHTHOUSES LETTER BY CAPTAIN BASIL HALLA VISIT TO THE KING - DRUMMOND AND LORD BROUGHAM , 113-137 CHAPTER X. THE REFORM ...
... BASE AT LOUGH FOYLE , • CHAPTER IX . 79-112 THE ORDNANCE SURVEY - MR DRUMMOND'S HEALTH - THE DRUM- MOND LIGHT , AND LIGHTHOUSES LETTER BY CAPTAIN BASIL HALLA VISIT TO THE KING - DRUMMOND AND LORD BROUGHAM , 113-137 CHAPTER X. THE REFORM ...
Page 47
... base - lines ; the second , the triangulation of the surface to be surveyed and measured . A base - line is an initial measured line , whose length is assumed as the unit to which all other distances calculated in the survey are ...
... base - lines ; the second , the triangulation of the surface to be surveyed and measured . A base - line is an initial measured line , whose length is assumed as the unit to which all other distances calculated in the survey are ...
Page 48
... base to go over its length ; and that if the measure expands with heat and contracts with cold , or expands with ... base being measured , the next set of operations , those of the triangulation , commence . Some object is fixed upon ...
... base to go over its length ; and that if the measure expands with heat and contracts with cold , or expands with ... base being measured , the next set of operations , those of the triangulation , commence . Some object is fixed upon ...
Page 49
... base , make with the base - line . The object , in short , is made the summit of a triangle in which two angles and the length of the side between them are known . Its distance from either end of the base can thus be ascertained by ...
... base , make with the base - line . The object , in short , is made the summit of a triangle in which two angles and the length of the side between them are known . Its distance from either end of the base can thus be ascertained by ...
Page 50
... base- lines is such a measure , bar , rod , or chain as shall have fewest of those qualities , and be least subject to those conditions in the use , which are the sources of errors of measurement ; and in regard to the second set of ...
... base- lines is such a measure , bar , rod , or chain as shall have fewest of those qualities , and be least subject to those conditions in the use , which are the sources of errors of measurement ; and in regard to the second set of ...
Other editions - View all
Memoir of Thomas Drummond, R. E. , F. R. A. S. , Under Secretary to the Lord ... John Ferguson McLennan No preview available - 2020 |
Memoir of Thomas Drummond, R. E., F. R. A.S., Under Secretary to the Lord ... John F. M'lennan No preview available - 2016 |
Common terms and phrases
Administration apparatus appears appointed Argand Argand burner Argand lamp bars became Bill boroughs Captain Catholics chief Colby Colonel Commissioners common considerable constables constabulary course 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 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 proposed question railways reflector Reform regard Report respect result Ribandism Roden Committee says Secretary Sir John society success Survey tanistry tenant Thomas Drummond tion Tipperary triangulation Trinity House Whigs whole Woolwich