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 70
... observation which , it was anticipated , would be encountered in Ireland , at once owing to the climate and the size of the triangles . These means Drummond seemed to be likely to furnish ; a light he had ready to hand , and was working ...
... observation which , it was anticipated , would be encountered in Ireland , at once owing to the climate and the size of the triangles . These means Drummond seemed to be likely to furnish ; a light he had ready to hand , and was working ...
Page 71
... observations were in conse- quence immediately and easily completed . In the subsequent operations of 1823 , recourse ... observation being established by the result of these experiments , the problem to which Drummond addressed himself ...
... observations were in conse- quence immediately and easily completed . In the subsequent operations of 1823 , recourse ... observation being established by the result of these experiments , the problem to which Drummond addressed himself ...
Page 72
... observation . Drummond's solution of the problem was as simple as it was happy and ingenious . His heliostat consisted of a mirror connected with two telescopes ; the one , forming the axis of the instrument , for looking towards the ...
... observation . Drummond's solution of the problem was as simple as it was happy and ingenious . His heliostat consisted of a mirror connected with two telescopes ; the one , forming the axis of the instrument , for looking towards the ...
Page 73
... observation , which for months had impeded the progress of the Survey . The first step in the Irish Survey was a " general * Letter to Mrs Drummond . reconnaissance " of Ireland made by Colby and Drum- mond THE DRUMMOND LIGHT AND ...
... observation , which for months had impeded the progress of the Survey . The first step in the Irish Survey was a " general * Letter to Mrs Drummond . reconnaissance " of Ireland made by Colby and Drum- mond THE DRUMMOND LIGHT AND ...
Page 74
... observation from Divis for the connection of the Irish and English Surveys . While they were on this duty , Drummond , with his heliostat , light apparatus , and a complete observatory of meteorological and other philo- sophical ...
... observation from Divis for the connection of the Irish and English Surveys . While they were on this duty , Drummond , with his heliostat , light apparatus , and a complete observatory of meteorological and other philo- sophical ...
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 |
Common terms and phrases
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