_Part of a Journal kept from _Scotland_ to _New Caledonia_ in _Darien_, with a short Account of that Country. Communicated by Dr. _Wallace_, F. R. S._ 413 _A Discourse tending to prove at what Time and Place _Julius Cæsar_ made his first Descent upon _Britain_: Read before the _Royal Society_ by _E. Halley_._ 422 _Miscellanea Curiosa._ VOL. III. _A Journal of a Voyage from _England_ to _Constantinople_, made in the Year, 1668. by _T. Smith_, D. D. and F. R. S._ On _Monday_ Evening _August 3, 1668._ we took Barge at _Tower-Wharf_, and at _Greenwich_ went on Board the _Bezant_ Yacht for the _Downs_, where we arrived the next day in the Afternoon, and went on Board the _Leopard_ Frigat, a Ship of 56 Guns mounted, Captain _O Bryen_ Commander, appointed to carry Sir _Daniel Harvey_, his Majesty's Ambassador to the Port of the _Ottoman_ Emperor at _Constantinople_. Here, upon his first Arrival, the Ambassador was Complemented by Sir _Jeremy Smith_, then riding Admiral, Sir _Edward Spragg_, and several other Commanders of the Men of War, and afterwards Saluted with Fifteen Pieces of Ordinance by the Admiral, to whom we returned as many; then by the Vice-Admiral, and several other Ships. All which were answered together at the same time with 21 in the whole. Here we were forced to Ride for several days, the Winds being contrary. In the _Offing_ between the _North Foreland_ and _South Foreland_ it runs Tide and half Tide, that is, it is either ebbing Water or Flood upon the Shore, in that part of the _Downs_, three hours, which is grossly speaking the time of half a Tide, before it is so, off at Sea. (For the flux and reflux of the Sea is not made exactly twice in 24 hours, but, as it appears by accurate observation, it requires an overplus of almost 50 minutes.) The reason of this diversity of Tides, I take to be from the meeting of the two Seas in that narrow Streight. Oftentimes when the Wind has blown hard at N. E. or at W. or W. and by S. there has hapn'd an alteration of the Tides in the River of _Thames_, which ignorant People have mistakenly lookt upon as a Prodigy. It is a most certain Observation, that where it flows Tide and half Tide, tho' the Tide of Flood runs aloft, yet the Tide of Ebb runs under foot, that is, close by the _ground_; and so at the Tide of Ebb, it will flow under foot, as that great and experienc'd Sea-Commander, Sir _H. Manwaring_, words it. _August 9._ We sailed from the _Downs_, but were soon forced back by distress of Weather, and came to an Anchor S. W. of the _South Foreland_. 10. The Wind blew at S. S. W. and the Sea run very high, so that we were in danger of losing our Cable and Anchor; the Ground, where we rode, at 16 Fathom ½ water, being somewhat gruff.