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Contrivance os this so Nice Matter, for the easic Explication thereof, tve»to tbe Grosiest Capacitics, as to Practice and Use is Wholly Different fromTheirs, and every one’s elfe I ever yet heard of.

I chosc rather to take the Revolution of the Moon, than that of the Sun,for my Chics and Primary Measore of Time ; Becauso, First, tbe LunorPhafis, and consequently Months, are more casily Difcerned, than the SunsAnnual Perhd, even by the most Ignorant Vulgär Eyes; who need butlook up, almost any Nighr, to see their Almonac. Next, The Obscrva-tions upon the Moon, made by the more Knowing Men, have been morein Number, more Exact, and of far grea^er Antiquity ; Astronomen havinghad the Help of Eclipses of very Distant Ages, for their Guide, in Findingout very near the True Measore of the Mootis Meati Motton. Lastly , Keep-ing an Account by the Moon, we may reckon by the Sun also, that is to siy,by Months and Tears too ; whereas on the contrary, reckoning by a SolarTear the Months are but Empty Names, and in Meafuring of Times and Sea-fons the Moon isRendered of no Uso; though somc Inanimate Bodies (soConsiderable, that they take up and polle fs perhaps Half this our Globe) asthe Seat, do t xactly obscrve the Moons Course , and there are Living Crea-tures also thought perhaps no less Considerable, at Land, that do the like ;which I need not mention, nor take any farther Notice of the near Affinity,if not Confmguinity with the Garter.

n '"' r ‘"c fr'j VIU. The Authors that Mention Casar' s Expedition into Britain withLscem»^*Bri- any Circumstances, axe Casor himsolf and Dion Cajsnis. It is certain thatEdm *h us' this Expedition of Casor s, was in the Year of the Consulare of Pompey andp'l'gf. Crastus, which was in the Tear of Rome 699. or the 55 th before the usoalc iF.ro of Christ : and as to the Tme of the Tear , Casar lays that. Exiguaparte <y£statts reliqua, he Came over only with Two Legions , viz,. the ythand 10 th. and aWFoet, in about 80 Sail of Merebant Ships, 1 8 Sail thatviete Ordered to carry over the Horste, not being able to get out at thefame time from another Porr, where they lay IVmd-bottnd. He fays, thathe Arrived about the 4 th Hour of the Day, viz,. between 9 and 10 in theMorning, On the Coast of Britain: where he found the Enemy Drawn upon the Cliffs ready to Repell him; which place he thus Describes, Locihac erat natura, adeo Montibus Angustis Mare continebatur ut ex locis Supe-rioribus in Littus Telum adjici possit, by which the Cliffs of Dover and theSoutb-Foreland, are justly Deleribed ; and could bc no other Land, beinghe siys in the 5 th Book of his Comment aries, in Britanniam Trajcffum estecognoverat circiter Millium Pastuum Triginta d Continenti. Here he sayshe came to an Anchor, and staid till the 9 th Hour, or till about between3 and 4 in the Afternoon, expecting till the Whole Fleet was come up; andin the mean time calPd a Council of War, and Advertised his Officers, asterwhat mannet they wereto make their Defient, particularly in Relation totheSujst of the Sea, whose Motion he calls Celerem atque Instabilem, Quick andUnevcn. Then viz,. about 3 in the Afternoon, he Weighed Anchor, andhaving gotten the Wind and Tide with him, he Sailed about 8 Miles from

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