Tidal observations made at Klampies [Klampis], Indonesia, by J A K van Hasselt and J van Gove Daily observations of the tides, arranged on monthly tables, at Klampis, on the north coast of Madura Island [Pulau Madura], Indonesia. Columns for: date; heights of high water and low water in Dutch yards and English feet and inches [the latter not completed]; tidal range; wind direction and force; turn of stream [not completed]; and general remarks. With fields beneath the main table, for noting the type of timepiece used, and the type of barometer. A printed key is give for wind force abbreviations 0-12. Each sheet is headed in English and Dutch: 'Register of Tides, observed at Klampies, Noordkust, Madura...in the month of...' with the month and year added. Signed by the observers, top right: 'J.A.K. Hasselt' and 'J. Van Gove'. 9 February-31 December 1839