Memoir of Thomas Drummond, R.E.,F.R.A.S., Under Secretary to the Lord Lieutenant of Ireland, 1835-1840 |
From inside the book
Page 70
... directed his attention to this subject . I think it is certain that he was engaged in his experi- ment in the winter of 1823 , and probable that the fact was one of the reasons why Colby selected him to be his right - hand man in his ...
... directed his attention to this subject . I think it is certain that he was engaged in his experi- ment in the winter of 1823 , and probable that the fact was one of the reasons why Colby selected him to be his right - hand man in his ...
Page 75
... directing the axis of the reflector to the instrument on Divis , that the light was seen , and its first appearance will long be remembered by those who witnessed it . The night was dark and cloudless , the mountain and the camp were ...
... directing the axis of the reflector to the instrument on Divis , that the light was seen , and its first appearance will long be remembered by those who witnessed it . The night was dark and cloudless , the mountain and the camp were ...
Page 81
... directing telescope might clearly be dispensed with . By an ingenious con- trivance , Mr Drummond dispensed with both telescopes , and reduced the heliostat to a simple mirror connected with a stand by a ball - and - socket - joint , so ...
... directing telescope might clearly be dispensed with . By an ingenious con- trivance , Mr Drummond dispensed with both telescopes , and reduced the heliostat to a simple mirror connected with a stand by a ball - and - socket - joint , so ...
Page 82
... directing - ring in a leathern case , the point - fixer slung it over his shoulders , marched with it to the station , and there set it up screwed on to the top of a stick . Besides rendering low and obscure stations readily visible ...
... directing - ring in a leathern case , the point - fixer slung it over his shoulders , marched with it to the station , and there set it up screwed on to the top of a stick . Besides rendering low and obscure stations readily visible ...
Page 116
... directed through a flame of spirit of wine . This source of heat was expensive , and , in considering the changes now to be made , economy was a primary object . For the alcohol Drummond substituted hydrogen gas , which proved not only ...
... directed through a flame of spirit of wine . This source of heat was expensive , and , in considering the changes now to be made , economy was a primary object . For the alcohol Drummond substituted hydrogen gas , which proved not only ...
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 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