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 61
... Drummond's . One would not readily think of romance in connection with the subject of triangulation . And yet it may now appear not unnatural that the latter should raise expectations of the former . Indeed , to those who have read Mr ...
... Drummond's . One would not readily think of romance in connection with the subject of triangulation . And yet it may now appear not unnatural that the latter should raise expectations of the former . Indeed , to those who have read Mr ...
Page 62
John Ferguson McLennan. CHAPTER VII . SURVEY OPERATIONS , 1821-1825 ; DRUMMOND'S INVEN- TIONS ; THE HELIOSTAT AND THE DRUMMOND LIGHT . DRUMMOND was only in the twenty - third year of his age when he joined the Survey in the summer of ...
John Ferguson McLennan. CHAPTER VII . SURVEY OPERATIONS , 1821-1825 ; DRUMMOND'S INVEN- TIONS ; THE HELIOSTAT AND THE DRUMMOND LIGHT . DRUMMOND was only in the twenty - third year of his age when he joined the Survey in the summer of ...
Page 67
... Drummond's own more full account in a paper " On the Means of Facilitating the Observation of Distant Objects in Geodetical Operations , " published in the " Philosophical Transactions " of 1826. It is pre- faced by a brief sketch of ...
... Drummond's own more full account in a paper " On the Means of Facilitating the Observation of Distant Objects in Geodetical Operations , " published in the " Philosophical Transactions " of 1826. It is pre- faced by a brief sketch of ...
Page 72
... Drummond's solution of the problem was as simple as it was happy and ingenious . His heliostat consisted of a mirror ... Drummond armed the Sur- vey officers with the most powerful means of overcoming the difficulties of observation by ...
... Drummond's solution of the problem was as simple as it was happy and ingenious . His heliostat consisted of a mirror ... Drummond armed the Sur- vey officers with the most powerful means of overcoming the difficulties of observation by ...
Page 73
... Drummond's dis- posal for the occasion . The common Argand burner and parabolic reflector of a British lighthouse ... Drummond . reconnaissance " of Ireland made by Colby and Drum- mond THE DRUMMOND LIGHT AND HELIOSTAT . 73.
... Drummond's dis- posal for the occasion . The common Argand burner and parabolic reflector of a British lighthouse ... Drummond . reconnaissance " of Ireland made by Colby and Drum- mond THE DRUMMOND LIGHT AND HELIOSTAT . 73.
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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 |
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