Details
DIONYSIUS LARDNER (1793-1859)
Autograph letter signed ("Dion. Lardner"), to I. K. Brunel at 53 Parliament Street, 3 pages, 4to, 36 Cambridge Terrace, Edgeware Road, 7th August 1835.
A letter regarding gradients on the Basing Line, part of the Bristol to London railway. "You asked me a question to-day in the Committee Room which I understood to be asked me as a private communication and I so answered it. I think it right however to prevent mistakes to state to you that my estimate of the total mechanical power of the Basing Line after the charge of the incline from 1 in 202 to 1 in 250 was made by a method which is independent of the gradients and dependent only on the total length of the line and the perpendicular ... of ascent and descent in the particular case in which there is no gradient more and less than 1 in 250."
Creased on folds, one marginal tear with loss.
With 15 autograph letters signed, to I. K. Brunel, all regarding the Bristol to London Railway. Correspondents include Lardner (one other letter), Nicholas Roch who introduced Brunel to the project, William Tothill a founder member of the project (2 letters), Charles Saunders the Secretary for the London Committee of the G.W.R. (6 letters) and G.E. Frere resident engineer, Bristol Division (2 letters).
28 pages in total, London, Corsham, Bristol, Box and Bath, July 11th 1833 - 25th November 1835. The letters discuss Committee meetings, question calculations and report difficulties and opposition (particularly with regards to the Box Hill Tunnel).
With a plan on wax paper showing the Great Western and the Buckinghamshire Railway Stations at Banbury (badly torn with loss). (17)
Autograph letter signed ("Dion. Lardner"), to I. K. Brunel at 53 Parliament Street, 3 pages, 4to, 36 Cambridge Terrace, Edgeware Road, 7th August 1835.
A letter regarding gradients on the Basing Line, part of the Bristol to London railway. "You asked me a question to-day in the Committee Room which I understood to be asked me as a private communication and I so answered it. I think it right however to prevent mistakes to state to you that my estimate of the total mechanical power of the Basing Line after the charge of the incline from 1 in 202 to 1 in 250 was made by a method which is independent of the gradients and dependent only on the total length of the line and the perpendicular ... of ascent and descent in the particular case in which there is no gradient more and less than 1 in 250."
Creased on folds, one marginal tear with loss.
With 15 autograph letters signed, to I. K. Brunel, all regarding the Bristol to London Railway. Correspondents include Lardner (one other letter), Nicholas Roch who introduced Brunel to the project, William Tothill a founder member of the project (2 letters), Charles Saunders the Secretary for the London Committee of the G.W.R. (6 letters) and G.E. Frere resident engineer, Bristol Division (2 letters).
28 pages in total, London, Corsham, Bristol, Box and Bath, July 11th 1833 - 25th November 1835. The letters discuss Committee meetings, question calculations and report difficulties and opposition (particularly with regards to the Box Hill Tunnel).
With a plan on wax paper showing the Great Western and the Buckinghamshire Railway Stations at Banbury (badly torn with loss). (17)