The lighting colomne or sea-mirrour containing the sea-coasts of the northern, eastern and western navigation: setting forth in divers necessarie sea-cards all the ports, rivers, bayes, roads, depths and sands ... With the discoveries of the chief countries, and on what cours and distance they lay one from another ... As also the situation of the northernly countries, as islands, the strate Davids, the isle of Ian-Mayen, Bear-Island, Old-Greenland, Spitsbergen and Nova Zembla ... Gathered out of the experience and practice of divers pilots and lovers of the famous art of navigation. By Jan van Loon. Whereunto is added a brief instruction of the art of navigation, together vvith nevv tables of the suns declination, also an almanack extending untill the yeare 1661.

Demonstration.

THe Suns Declination is caused through his course alongst the Ecliptique Line thus. Let A bee the northerne and B the southerne Pole of the World C P E the Equinoctiall G H G the Ecliptique Line. The Sonne comming in the beginning of Aries on the 21 of March to D, commeth also in the Equinoctiall Line, hath besides no Declination neither northwards nor south∣wards, but going forwards alongst the Ecliptique from D to H, and comming to K in the beginning of Taurus, it shall bee distant and declined from the Equinoctiall Line towards the north from I to K. 11 degrees and 30 minu∣tes. Going forwards to H, is then at most declined from P to H 23 Degrees 31½ minutes. From thence following its course from H to F, commeth in the beginning of Li∣bra againe to the Line without Declination. Going for∣wards from F towards G untill M, in the beginning of Sa∣gitarius, it shall bee distant or declined from the Line F E towards the South from L to M, 20 Degrees 13 minutes. Comming to G it is then at its farthest declination from E to G towards the south, from thence it runneth againe to D to the Equinoctial line, perfecting its course in a yeare.