Front cover image for Extension of the triangulation of the ordnance survey into France and Belgium with the measurement of an arc of parallel in latitude 52° N. from Valentia in Ireland to Mount Kemmel in Belgium. Published by order of the Right Hon. Sir George C. Lewis, Bart. Sectretary of State for War, by Colonel Sir Henry James, R.E., F.R.S., &c. Director of the Ordnance Survey

Extension of the triangulation of the ordnance survey into France and Belgium with the measurement of an arc of parallel in latitude 52° N. from Valentia in Ireland to Mount Kemmel in Belgium. Published by order of the Right Hon. Sir George C. Lewis, Bart. Sectretary of State for War, by Colonel Sir Henry James, R.E., F.R.S., &c. Director of the Ordnance Survey

Henry James
Print Book, English, 1863
Printed by George Edward Eyre and William Spottiswoode, printers to the Queen's most excellent Majesty. For Her Majesty's Stationery Office, London, 1863