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 53
... direction of Colonel Mudge . By 1800 the larger triangles had in many districts been filled in , and several counties had been mapped . In 1801 the triangles were carried northwards , and a base mea- sured in North Lincolnshire on ...
... direction of Colonel Mudge . By 1800 the larger triangles had in many districts been filled in , and several counties had been mapped . In 1801 the triangles were carried northwards , and a base mea- sured in North Lincolnshire on ...
Page 57
... direction by means of a pocket - compass and map , the whole party set off as on a steeple - chase , running down the mountain - side at full speed , over Cromdale , a moun- tain about the same height as Corrie Habbie , crossing several ...
... direction by means of a pocket - compass and map , the whole party set off as on a steeple - chase , running down the mountain - side at full speed , over Cromdale , a moun- tain about the same height as Corrie Habbie , crossing several ...
Page 67
... direction of MM . Fresnel and Arago . Its construction and advantages are explained in a Mémoire sur un Nouveau Systême d'éclairage , ' by M. Fresnel . The light which it gave is stated to possess 3 times the intensity of that given by ...
... direction of MM . Fresnel and Arago . Its construction and advantages are explained in a Mémoire sur un Nouveau Systême d'éclairage , ' by M. Fresnel . The light which it gave is stated to possess 3 times the intensity of that given by ...
Page 71
... direction . Although this method ad- mitted but of rude execution , it fully answered the purpose for which it was employed ; the plates became visible in succes- sion at the appointed hours , the duration of each varying with the ...
... direction . Although this method ad- mitted but of rude execution , it fully answered the purpose for which it was employed ; the plates became visible in succes- sion at the appointed hours , the duration of each varying with the ...
Page 81
... direction was determined by one telescope which pointed to the station of observation , while the motions of the mirror connected with it were determined by another ... direction . The direction of SIMPLIFIED FORM OF THE HELIOSTAT . 81.
... direction was determined by one telescope which pointed to the station of observation , while the motions of the mirror connected with it were determined by another ... direction . The direction of SIMPLIFIED FORM OF THE HELIOSTAT . 81.
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