A later and experimental testimony is to be found in the travels of Monsieur _Duloir_; who about twenty years ago, remained sometime at _Negroponte_, or old _Chalcis_, and also passed and repassed this _Euripus_; who thus expresseth himself. I wonder much at the Error concerning the flux and reflux of _Euripus_; and I assure you that opinion is false. I gave a Boat-man a Crown, to set me in a convenient place, where for a whole day I might observe the same. It ebbeth and floweth by six hours, even as it doth at _Venice_, but the course thereof is vehement. Now that which gave life unto the assertion, might be his death at _Chalcis_, the chief City of _Eubœa_, and seated upon _Euripus_, where 'tis confessed by all he ended his days. That he emaciated and pined away in the too anxious enquiry of its reciprocations, although not drowned therein, as _Rhodiginus_ relateth, some conceived, was a half confession thereof not justifiable from Antiquity. Surely the Philosophy of flux and reflux was very imperfect of old among the Greeks and Latins; nor could they hold a sufficient theory thereof, who only observed the Mediterranean, which in some places hath no ebb, and not much in any part. Nor can we affirm our knowledg is at the height, who have now the Theory of the Ocean and narrow Seas beside. While we refer it unto the Moon, we give some satisfaction for the Ocean, but no general salve for Creeks, and Seas which know no flood; nor resolve why it flows three or four foot at _Venice_ in the bottom of the Gulf, yet scarce at all at _Ancona_, _Durazzo_, or _Corcyra_, which lie but by the way. And therefore old abstrusities have caused new inventions; and some from the Hypotheses of _Copernicus_, or the Diurnal and annual motion of the earth, endeavour to salve flows and motions of these Seas, illustrating the same by water in a boal, that rising or falling to either side, according to the motion of the vessel; the conceit is ingenuous, salves some doubts, and is discovered at large by _Galileo_. [SN: Rog. Bac. doctis, Cabeus Met. 2.] [Sidenote: _How the Moon may cause the ebbing and flowing of the Sea._] [Sidenote: _Why Rivers and Lakes ebb and flow not. Why some Seas flow higher than others, and continue longer._]