Chart of the British Isles. To accompany Mr. Whewell’s paper on the tides. The lines marked thus I, II, III, IV, V are cotidal lines. The Roman figures show the time of high water in Greenwich time, at new and full moon.'. An important scientific chart produced to accompany William Whewell’s pioneering research on ocean tides, published in the Philosophical Transactions of the Royal Society. Concentrating on the coasts of Britain and Ireland, the chart illustrates Whewell’s revolutionary concept of cotidal lines—curves connecting places at which high tide occurs simultaneously, a term he himself coined. While the chart acknowledges earlier work by John William Lubbock (1831), it represents Whewell’s decisive advance in synthesising vast quantities of observational data into a coherent and predictive model of tidal propagation. His research depended on observations gathered by thousands of volunteers at coastal locations worldwide, now regarded as one of the earliest examples of citizen science. The chart stands as a landmark in the development of tidal science and one of the foundational achievements of 19th-century thematic cartography. . Walker, John & Charles. Published 1833 [dated]. Antique copperplate map. Size 60 x 67 cm | 23.5 x 26.0 inches. Condition: Good; suitable for framing. Please check the scan for any blemishes prior to making your purchase. Please contact us if you would like to arrange to view this map. This is a folding map. There is nothing printed on the reverse side, which is plain. Tags: 1833, British, British Isles, Greenwich, Map, Philosophical Transactions of the Royal Society, Walker John & Charles

Reserve: $330.00

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