$4 AVSTRIACA SIDERA PROPOSLIFIO :XIEL eAngulum Ecliptica cum verticali , totumá, Heliotropo- rum cur(nm beneficio dici tam infiramenti | cognofcere.» . | Cue N Echiptica AB C quocunque loco Sol verfetur, COE IG putain B, per hocpunctum tranfit ex polo xqua- V 2406 toris D , meridianus aliquis puta… … angulum PF B A , qui eft alter | angulus Ecliptice cum verticali; vtrouisautem cognito fa - ts notum eit tres alios nullo negotio definiri. Tn planifphe- rio ergo iam defcripto Solis altitudo in regula notctur, ap- obtinet: nam angulus interregulam & rectam A B.com-
Astronomy -- Early works to 1800
Internet Archive · Fisher - University of Toronto · Public domain (published before 1931). Free to use for anything.
![An illustration from Epytoma Ioa[n]nis de Mo[n]te Regio in Almagestu[m] Ptolomei](https://img.insideoutlibrary.com/img/200/ia-EpytomaIoannisd00Regi-34-2.webp)
