William Johnston’s plan of Madeira
By JOHNSTON, William, 1791
Geo-Hydrographic Survey of the Isle of Madeira with the Dezertas and Porto Santo Islands geometrically taken in the year 1788. By William Johnston Esq[ui]r[e]. This Chart drawn from actual Surveys taken with the Permission of His Excellency Don Diego Perreira Forjas Coutinho, Knight of the Order of Christ, Governor General and Commander in Chief of the Island of Madeira and Porto Santo &c. &c. &c. a discerning and liberal Promoter of every useful improvement in Science. Is respectfully dedicated To the Right Honourable John Henry Petty Earl Wycombe in testimony of the high consideration in which His Lordship is held by His Lordship’s most humble and faithful humble Servant William Johnston of Madeira.
- Author: JOHNSTON, William
- Publication place: London
- Publisher: Digested and Published by W. Faden, Geographer to the King
- Publication date: Jan[uar]y 1st, 1791.
- Physical description: Two engraved charts, on two sheets joined, fine original hand-colour, inset plan of Funchal, first chart with view of Funchal and plan of the road of Funchal.
- Dimensions: 1160 by 620mm (45.75 by 24.5 inches).
- Inventory reference: 1078
Attached to the left of the chart is a ‘Plan of the Road of Funchal’, with detailed soundings, anchorages, and observations made by Thomas Howe in 1762; whose observations were communicated by Alexander Dalrymple to the admiralty.
We are aware of only one other recorded example of the charts together joined; that in the British Library.
- BLMC Maps * 68165.(6.)
- Maps * 68165.(9.).