( 3 °+ )

r>. 13t. determinatur Sirus Macularifm Se Cornuum Lunx, si Linea A D, ( ParallelaSemitx Lunari P Q, ipsius Marginem tangenti, fiat Diameter Quadrati LunxCircumscripti qux dividatur in tot xquales partes quot Secundis Luna per FilumObliquum pertvansit, ut in. hac Eclipsi in partes 204. Hujus Quadratiduo Latera AC, B D, Primum Obliquum reprelentabunt, utpote illi Parallela,reliqua AB, C D, Secundum Obliquum, sumpta äutem Differentia inter Transi-tum Marginis Prxcedentis Lunx& Maculx M, per Obliquum,in Secundis hora-riis ab Angulo prxcedenre ab A in T,& ducta per T, Rectä E F, Parallela La-teri, A C, & similiter sumpta ab eodem Augulo A, differentia inter transitumMarginis prxcedentis K, & Maculx M, per Secundum Obliquum AB, ut A Vper Punctum V, ducatur Recta G V H, Parallela Lateri Ä B, representabit Se-cundum Obliquum secans Priorem in Puncto M, ibique Situm Maculx determi-nabit. Eadem ratione determinabitur Situs Cornu E, per Differentiam ipsiusTransitus & Marginis per Primum Obliquum sumptam in Diagonali ut AI’,Situs Cornu H, per differentiam ipsius Transitus per Secundum Obliquum A B,ut A V, & ducta per V, Recta G H, Parallela Lateri A D, modo sciatur sit-ne Cornu in Semicirculo Prxccdente aut Sequente.

' An zdipstoftb' XL. The Tables did indicate an Edisse of the Moon, Julj 27. (St.n.) 166 y. butAsoon.wi^. ob- though the Sky here was very ciear, yet the Moon was not at all Obscured byzTcIvV'mH«" th e True Shadow, but entred only a little into the Penumbra, wherein it con-velius^n. 19. kiuued yc/. The Beginn ing of its touching the Penumbra did then almost hap-t- 3+9. pen, when Aquila was elevated 36°. 18'.

<An Eclipse of the XLI. In the Edisse of Juno 1 6 .(St.n.) 1 666. the first Phasis of 1 D igit 4.5 1 . ap-Au^fi U 'b M ^ ‘ n khe Moon’s Altitude of 2°. 30s when the Grcatest Obsouration wasJlevdius.'-fc./’ialready paff. The End feil out 9 h . 27'. about 128°. from the Zenith West ward.34.8. «. 21. f-

^AnEcHpsttfthe XLII. Die 29. Sept. (St. n.) 1670. mane Initium hujus Edipsis incidit 2 h . 22sMoon, Sept. 19. quanquam id ipsüm vix omnino accurate observari potuerit, ob Umbram TerrxHevdius^n ÜI Oilutilsimam: Siquidem, durante Eclipsi, tota Umbra adeo Tenuis erat atquef . 2023. ' ' ' Diluta, ut omnes prxeipuas Maculas per eam, meo viginti pedum T ubo, quin£c brevioribus, optinso conspicere potuerim.

Maxima ejus Obscuratio incidit 3 h - yos Finis verb 21'. Tota itaque Du-ratio fuit 2 h . 5-9' ; & Quantitas vix amplius 9 Digitorum. Circa Medium hu-jus Eclipsis 3 h . 40'. Stellulam quandam Incognitam, ac solo Tubo conspicuam,a Luna circa Lacum Nigrum Majorem tectam, clarissime conspexi; sed exireeam non deprehendi. Deinde finita Eclipsi, jucundissimum quoque observatuerat, binä Luminaria simul supra Horizontem videre. Nam priusquam Lunaoccideret, Sol oriebatur. Cxtera notatu digna ex particulari hoc Typo depre-hendetis.