John Rocque's Map of London, 1746
John Rocque's Map of London, 1746, more formally "A plan of the cities of London and Westminster, and borough of Southwark", surveyed by John Rocque and engraved by John Pine, is a map of Georgian London to a scale of 26 inches to a mile. The map consists of twenty-four sheets and is 3.84 by 2.01 metres in overall size. Taking nearly ten years to survey, engrave and publish, it has been described as "a magnificent example of cartography ... one of the greatest and most handsome plans of any city".
Also in 1746 Rocque published another smaller-scale map of London and its environs in sixteen sheets: this was entitled An Exact Survey of the citys of London Westminster ye Borough of Southwark and the Country near ten miles round / begun in 1741 & ended in 1745 by John Rocque Land Surveyor ; & Engrav'd by Richard Parr.
- "This Plan will be contained in 24 Sheets of the best Imperial Paper, being near 13 Feet in Length, and 6 Feet and an Half in Depth, and will extend from West to East, on the North Side, from beyond Mary-bone Turnpike, by Tottenham-Court, the New-River-Head, Hoxton and Part of Hackney to near Bow: From thence, Southerly, by the Easternmost Parts of Mile-End and Lime-House, cross the River Thames to Deptford Road; from whence the Southern Side will extend Westerly, by Newington and Vaux-Hall, to that Part of Surrey which is opposite to Chelsea-College; which Building, together with some Part of Knights-Bridge and Hyde-Park, will be included in the Western Limit..."
Much of the earlier surveying work needed to be repeated and by 1742 the scheme was close to collapse. There were 246 subscribers, one being Frederick, Prince of Wales, who later was to appoint Rocque as the royal cartographer. The Court of Aldermen of the City of London subsidised the undertaking and the map was dedicated to them and to the Lord Mayor.
Method of survey
Rocque combined two surveying techniques: he made a ground-level survey with a compass and a physical metal chain – the unit of length also being the chain. Compass bearings were taken of the lines measured. He also created a triangulation network over the entire area to be covered by taking readings from church towers and similar high places using a theodolite made by Jonathan Sisson (inventor of the telescopic-sighted theodolite) to measure the observed angle between two other prominent locations. The process was repeated from point to point.
The two methods needed to be reconciled and at the start of his work Rocque relied too much on his ground surveys, only to find they were not in agreement with triangulation. This meant the earlier ground surveying needed to be repeated. Triangulation tends to be more accurate on the larger scale and in the City the dual approach was very successful but in rural areas there were too few prominent landmarks for triangulation to be effective.
Rocque recorded street and place names as the survey proceeded and double checked these by comparing their names with those on earlier maps. For the City of London the Court of Aldermen ordered the ward beadles to assist with this aspect and so the map includes ward boundaries whereas in other areas only parish boundaries are shown.
The map shows internal details for some buildings, such as St Paul's Cathedral, and in less densely populated areas gardens are shown. However, the detail on the map is variable over the various parts of London – in the inner city there was not room for minor roadways to be included. Churches, grand buildings and streets receive close attention but industrial buildings are neglected.
Hatching and broken lines are used to distinguish buildings, gardens, fields and woods. Apart from the cartouches, pictorial detail is limited to trees, boats on the River Thames and the gallows at Tyburn.
The map was engraved on copper plates by John Pine. Each sheet is 27 × 19 inches (77 × 57 cm) and the scale is 1 inch to 200 feet (1:2400), about 26 inches to the mile. Although the survey covered the whole area as a unity, the sheets of the map were produced individually and were not separated from a master drawing.
After being drawn, each paper sheet was placed over a waxed copper plate and the lines were traced manually to produce the engraving. The plate was inked and damp paper pressed on to it to pick up the ink. As they dried the sheets distorted to some extent so they did not line up perfectly with each other.
Publication, sale and reception
The map was published in October 1746 by John Pine and John Tinney and advertised for sale on 27 June 1747 as a set of twenty-four sheets covering adjacent areas of London – three rows of eight sheets each. It was titled A Plan of the Cities of London and Westminster and Borough of Southwark; with the Contiguous Buildings; From an actual Survey taken by John Rocque Land-Surveyor, and Engraved by John Pine, Bluemantle Pursuivant at Arms and Chief Engraver of Seals, &c. to His Majesty. An alphabetical list of over 5,500 locations was published in 1748. Rocque had a shop in "Hide Park Road" (a section of Piccadilly), and the public had been able to see the drafts and suggest corrections prior to publication. In his catalogues the map was generally described as "His large Survey of London in 24 Sheets".
In the Annals of London (2000) the map is described as a "massive achievement"; and according to Chetham's Library it is "a magnificent example of cartography and an indispensable reference tool for historians: one of the greatest and most handsome plans of any city". The Oxford Dictionary of National Biography states it was "the outstanding plan of the capital in the eighteenth century".
The twenty-four sheets of the map
|Each sheet is a separate clickable image|
Alphabetical index to the map
Roque and Pine's index consisted of a series of sections such as Alleys or Ditches or Churches – nineteen in all – each section containing locations listed alphabetically. For each location the index specified the sheet as the numeric row followed by the alphabetic column. Each sheet was notionally divided into nine rectangles as illustrated in their diagram. This number came last. So, the bottom right of the whole map was 3 H 9.
In 1981 a reduced facsimile edition of the map was published in volume format by Harry Margary in association with the Guildhall Library, with a superimposed grid, full place-name index, and introductory notes by Ralph Hyde, under the title The A to Z of Georgian London.
Rocque's map forms the basis of a 21st-century project, Locating London's Past, to provide a GIS interface for researchers to map and visualise data concerning texts and artefacts that relate to the 17th and 18th centuries. To correct for distortions in the surveying and in the original paper sheets, a transformation of the map was required to rectify the images for georeferencing – Rauxloh provides an illustration of the requirement. The high resolution digital images of the 1746 map were supplied from the Motco image database which can also be accessed for personal use.
In 2013 one of the originals of the map was offered for sale in "very good" condition at £30,000 although typically prices are less than £10,000.
A 2008 historical crime drama, City of Vice, is a British television series set in Georgian London. To link between the various narrative scenes, Rocque's map is shown from above, then becomes three dimensional, and finally merges into the next film sequence.
The Country Near Ten Miles Round
In addition to the map of central London, a separate map of the "Country Near Ten Miles Round" was also published by Rocque in 1746. The map was originally printed in 16 sheets. The map is dedicated to Richard Boyle, 3rd Earl of Burlington at the bottom centre. A key to symbols distinguishing orchards, arable land, formal parkland and gardens, pasture, and woodland is included at bottom right.
|Each sheet is a separate clickable image|
- Rocque produced a number of maps of London in various editions. In particular the map primarily described in this article should not be confused with An Exact Survey Of The City's Of London, Westminster Ye Borough Of Southwark And The Country Near Ten Miles Round Begun In 1741 & Ended In 1745, which was also published in 1746 but was in 16 sheets, not as stated or described in Maps of Old London.
- The prospectus had the title A Proposal by John Rocque, Surveyor, and John Pine, Engraver, For Engraving and Printing, by Subscription, A New, Accurate, and Comprehensive Plan of the Cities of London and Westminster, and the Borough of Southwark.
- Richard Horwood's map of 1792–1799 is at the same scale, covers a somewhat greater area and is arguably more detailed.
- Map Forum 1999, The Works of John Rocque.
- Map Forum 1999, Works of John Rocque, item 31.
- Map Forum 1999, Works of John Rocque, item 25.
- "John Rocque's Survey of London, Westminster & Southwark, 1746". Locating London's Past. Locating London's Past. Retrieved 24 June 2013.
- "John Rocque. Map of London. 1746". Harris Lindsay Works of Art. Harris Lindsay Ltd. Retrieved 24 June 2013.
- Laxton, Paul. "Rocque, John (1704?–1762), land surveyor and cartographer". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/37907. (Subscription or UK public library membership required.)
- Map Forum 1999, Biography, John Rocque.
- Rauxloh, Pete. "Fitting Rocque to modern London – Investigating the warp factor". Locating London's Past. Blog at WordPress.com. Retrieved 25 June 2013. The Locating London's Past official blog, written by the Director of Technology Services of Museum of London Archaeology.
- "John Rocque's 1746 Large-scale Plan Of London". 101 Treasures of Chetham's. Chetham's Library.
- Rauxloh, Pete. "Recreating Rocque – London 1746". Locating London's Past. Blog at WordPress.com. Retrieved 24 June 2013. The Locating London's Past official blog, written by the Director of Technology Services of Museum of London Archaeology.
- Rocque & Pine 1747.
- Map Forum 1999, Rocque's Proposals.
- Richardson, John (2000). The Annals of London. University of California Press. p. 198. ISBN 978-0520227958.
- Rocque & Pine 1747, pp. 1-47.
- Rocque & Pine 1747, p. xii.
- "Horwood London, Westminster & Southwark 1792-9 Horwood London, Westminster & Southwark 1792-9. About the Map". Motco UK Directory and Image Database. Motco. Retrieved 27 June 2013.
- Hyde, Ralph, ed. (1981). The A to Z of Georgian London. Lympne Castle, Kent: Harry Margary. ISBN 0-903541-34-3.
- "About the Project". Locating London's Past. Locating London's Past. Retrieved 24 June 2013.
- Rauxloh, Pete. "Fitting Rocque to modern London – Georeferencing". Locating London's Past. Blog at WordPress.com. Retrieved 25 June 2013. The Locating London's Past official blog, written by the Director of Technology Services of Museum of London Archaeology.
- "Project Information. Project staff.". Locating London's Past. Retrieved 5 July 2013.
"Peter Rauxloh". Museum of London Archaeology management team. Museum of London. Retrieved 5 July 2013.
- "Project Information". Locating London's Past. Locating London's Past. Retrieved 26 June 2013.
- "London, Westminster And Southwark By John Rocque 1746". Motco UK Directory and Image Database. Motco. Retrieved 27 June 2013. Copyright is claimed on the database which contains a new presentation of the work. A website, which is restricted for personal use, provides access to the whole map. There is a page to start browsing
- Kauffman, Jeffrey. "City of Vice". DVD Talk Reviews. DVD Talk. Retrieved 4 July 2013.
- Map Forum (1999). "Issue 5". Map Forum. Antique Map Magazine. Map Forum. Retrieved 25 June 2013.
- Rocque, John; Pine, John (1747). Index to Rocque's Plan of London. John Pine and John Tinney. Retrieved 27 June 2013.
- Locating London's Past -- Rocque map laid over modern Google map (and 1870s Ordnance Survey maps)