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 69
... mean of ten experiments , made lately with every precaution , gives for the light emitted by lime , when exposed to ... means of light , he had been experiment- ing with various pryotechnical preparations and chemical stuffs as lights ...
... mean of ten experiments , made lately with every precaution , gives for the light emitted by lime , when exposed to ... means of light , he had been experiment- ing with various pryotechnical preparations and chemical stuffs as lights ...
Page 70
... means of over- coming the difficulties of 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 ...
... means of over- coming the difficulties of 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 ...
Page 72
... means of screws and spirit - levels , the mirror was so connected with the latter telescope , that , as the telescope was turned to the sun , the mirror , moving with it , went into position to reflect the sun's rays to the station of ...
... means of screws and spirit - levels , the mirror was so connected with the latter telescope , that , as the telescope was turned to the sun , the mirror , moving with it , went into position to reflect the sun's rays to the station of ...
Page 82
... means of identifying stations - a matter of great importance in extensive surveys . The point - fixer and observer simultaneously noted and recorded the times of observation , and from the record , the station , if lost , could easily ...
... means of identifying stations - a matter of great importance in extensive surveys . The point - fixer and observer simultaneously noted and recorded the times of observation , and from the record , the station , if lost , could easily ...
Page 83
... means of the same measuring ap- paratus . The site of the Lough Foyle base is on the eastern border of Lough Foyle , its northern end being in the parish of Magilligan , in the county of London- derry , and its south end in the parish ...
... means of the same measuring ap- paratus . The site of the Lough Foyle base is on the eastern border of Lough Foyle , its northern end being in the parish of Magilligan , in the county of London- derry , and its south end in the parish ...
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