tb. p. u-

( 6 44 )>'

aster which Unding the Wind favourable, he stecred towards the Coast of "Africis N. N. E. But having Sailed upon that Line, a matter of two or three-hundred Leagues, the Masters of the other Ships under his Conduct, appre-hending thatthey (hould want Water, before they could reach that Coast, dici-propose to him to steer their Course to Barbadoes, to siipply themselves with Wa-ter there. Wheeupon the faid Major having called the Master and Pilots toge-ther and caus’d them to produce their Journals and Calculations, it was foundthat thofe Pilots did dister in their Reclconing, froin that of the Major, one of>them about 80 Leagues, another about an hundred, and the third more; but-the Major judging by his Pendulum iVatches . that they were only forne thirty ■leagues distant from the iste of Fuego, which is one of the Istes of Cape Ver~de, and that they might reach it next Day, and.having a great Considence irr.the seid iVatckcs, resblved to steer their Course thither, and having given or-der (b to do, they got the very next Day about Noon a Sight of the faid Iste.'of Fuego , finding themselves to Laii directly upon it, and..sb arrived that As-,ternoon as he had faid.

M. Hugcns being informed of this Succeß wrote to Paris to this effect ; Idid not imagine that the fTarcbesoi this First Structure would sücceed so well,and I had reserved mymain Hopes forthe New Ones. But seeingthat those>have already served so succeßfully, and that the other. are yer more just andoxact, I have the more Rcasbn to believe, that the Invctuion of Longitudcswill come to its Perfection. In the mean time I fhall teil you, that the Statesdid receive my Proposition, when I desired of them a Patent for thesc NewfVatcbes , and the Recompense set apart for the Invention in Case of Succeß ;and that without any Difficulty they have granted my Request, commandingme to bring one of these Watchcs into their Astembly, to explicate unto themthe Invention, and the-Application thereos to .th z.Longiuides, whieh I havedone to their Contentment..

III. i. Inveni tanderti Modum Lunte Locum sciendi, exili quodam Instru-Att f'om mentiolo tantum adjutus, ad unum vel duo Scrupula ; & quod mirum est,the Moon’s n ec Rcfr a Iliones, nec Parallaxes meis Observationibus obsunt, .quia IngeniolaMath’ Pröfcf" Methodus his Tricis me liberat. Postum hac Methodo Terra Marique uti;for «/seville. ideo Tabulis Luna: Correctis non. amplius Modus desideratas Locorum Longitu-n. n8.f. 427. q- nes ca ptandi, in omnibus Terra Marisque Locis, ignorabitur. > •

z. Quod de Instr ument iolo- suo scribit Professor Hispalensis, Fidem meam,j b (quod bona ipsius Venia dictum velim) superat. Privari enim Luna neom”. ilamsl-ced. Refractione, nec Parali axi, in Horizonte nostro potest, nisi ad Renitb aliquan-do posset pertingere; eousque enim extenduntur, ejusque Locum implicantRcfrailioncs . Delinit in Nonagesimo Gradu Ecliptica semel tantum de DicLongitudinis Farallaxis, sed Latitudinis non perinde. Nec- satis capio, quo-modo fabricari Instrumentum postit, quod una cum Parallaxi Refractionem,cujus Incrementum longe diversam habet rationem, consideret.

Tb. f. 43 1 *

IV. The

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