Tractatus de globis, coelesti et terrestri eorumque usu. (1617)
Pontanus, Johannes Isacius, 1571-1639 · Amstelodami. : Excudebat Iudocus Hondius, sub signo Canis Vigilantis in Platea Vitulina prope Senatoriam Domum · leaf 104
76 . TRACT. DE GLOR. Adinventionem peripherice feu ambitus globi terreni affumuntfcrhtfhypo- thefes: i quod maximus terra: circulus in 3 60 gradus exemplo cakftium diftri- buatur. 2 quod unus maximi terra: circuli gradus 500 ftedia ftu pafluum Ro¬ manorum <52 5 oc expleat, quibus quindecim… … His prsaflumtis, multiplicantur 3 60 grad.per 1 5 milliaria:& producuntur milliariaGertnanica ^oo.Seu multiplicantur $60 grad.per 500 fladia;& fiunt Radia 1 8 000. Et tanta efl terne perimeter feu peripheria. Si autem 3 60 multiplicentur per 60 fiunt milliaria Italica & Anglica 2 1 <5co; fi vero…
Globes
Internet Archive · John Carter Brown Library · Public domain (published before 1931). Free to use for anything.
![An illustration from Albumasar, De magnis [con]iunctionibus, anno[rum] reuolutio[n]ibus, ac eo[rum] profectionibus octo [con]tines tractatus (1515)](https://img.insideoutlibrary.com/img/200/ia-albumasardemagni00abum-70-63.webp)
