A physical dissertation, [electronic resource] : concerning The Cause of the Variation of the Barometer, the form of the globe of the earth, the diminution of heavy bodies, the flux and reflux of the sea; wherein some mistakes in Sir Isaack Newton's system are rectify'd. As also, that it is impossible to find out the longitude; And that those who pretend to make that Discovery, are Impostors. Written originally in French by the Sieur Jaques de Roubais du Tourcoin, and publish'd by Monsieur S. Dury de Champdere, now Engineer to their High Mightinesses, the Lords, the States-General of the United Provinces.