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fractions in both) I -fouhd the Sun at 6,,. 55/, ro bc 740.' 30'. in Coiiß-quence of thc Loxver Ilead os H. The Diftercncc of I.Qngitude betwixethese rwo Stars is 170. 59': And iherefore now thc Sun in Confequeneeof thc Lucida Calas II. Hr.-,. 19'. So that thc Sun’s Apparent Motion be-twixt the Ycar ty'Si. M ar. 5. 4*. 41'. and thc Year 1 585. Septevtb. 15-,6h. 5) . Matte, (bcfides the whole Revolutions) was 187©. 16'. but thcMean Motion is 19I0. a.'. greater thun the Apparent by ^ 0 . 46'. whidbpavted in Proportion to the Equation of the Earth’s Motion, collccted fürthole times from my-New Tables, gives the greatest Equation of the Orb,io. 54b 15''. consenting to my wonder (without any wrclting of thcObfervations) with that, which I dedueed from Caßini' s Correct Meridio-nal Altitudes.
The Sun’s Motion by thc Tables wisch I now ufc, groundcd on thisEquation, is lels than Tytho's by no Iris than yb That great Equationniade him conimit no finali Errors, and put him upon stränge Shifts to Lideand Cilve thetn. So that all bis Obleivations of the Planers in theil- Oppo-sitions to the Sun, are to be Corrected, before we may attempt to vepre-sent thetn by Numbers : For bis Errours in the Sun’s Place .made him Errsömetimes 5 or 6 hours in the timc of the Opposition • which must btRcformed.
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XXI. Non parvum adlmc est -Diffidium inter Astrononios, qua nta fit inaequando Tempore Prosthaphxresis, ita ut Lottgomonmnus fateatur, nul-lam in Astronomico Pulvere majorem Difficultatem se invenisse ; quod cumnotarem, animadverti in quibusdam Coeli Observationibus a me factis, quidex illis eveniret , ct, cum mihi esset Horologium Rotatile Peudulum, ad-modum exactum, Linea Meridiana artificialiter Constituta, examinabamSolis in Meridianum Ingressum, singulis Diebus , cum quo ad amussimHorologium meum congruebat, &c si discrepabat aliquando, rarissime duo-bus minutis discriminabat, quod, oum opus erat, emendabam Quare pertriennium continuando, & quotidie Solent in Meridiano observando, cumlicebat (quod in hac Regionis Parte fepe siepius fit) inveni tandemnullam Disrn Natüralem Longiorem Revolutionem, in Uno vel Alio An-ni Terqpore, alia. Die -habuisse, unde intrepide dico omnes Dies Naturales«quales esse, Sc si adhuc aliqua Difterentiola intercedit, non esse Sensibilem.Hxc volui notum facere, ut Astrononios hoc Scrupulo liberarem, quod tammultos torsit & indict torquet, quanquam Tychonica -Equario propter Eclip-tice Obliquitatem non sit rejicienda.
a. Dies quomodo jEquales esse possint, & tamen -Equario Tychonica ad-mitti, vix me capere fateor. Ob inaequales etenim «qualium Ecliptica;partium Rectas Ascensiones, Dies unus jEquinoctialis Tropico uno Breviorerit Scryipulis Horx fecundis 42 ; & Dies 14 Tropici, totidem -Equi-noctialibus Longiores sunt sexta Horx parte, seu Scrupulis primis . 10.Hanc autem Differentiam Majorem credo, quam ut eam in Observationi-bus liiis non perciperet Professor Hispalenfus , proindeque ipsimi in exami-nandis iii Tychonicam Temporis -Equationem adliibuiflc Autumem.