em(Sole radiantejobferua vmbr« ftili fcrrei «x« tremicatem, ibi notetur A,fuper quam ex C,C€ntro,expande cifcinum, & de^cribc portionemcirculi,veI ferhicirculurh. Poft pheridiem iterum diligcnterobferua vmbrae ftili extremitatem,qu^ ad eadem circuli perU pheriam deficiatin pundtoB. Portio itaque… … & horizontis diuificmem defiuiunc.Huiufmodi inquamdiuifionis nu- merum opportuncde. i o.in,t o.fubnotaui.Porro,a fingulisdenarijs af cendunt Une« cxmx concudim in zenith petentes. h« quidem linef azi- muth, dcnosque eorum ^a.in fuperiori hemifpharrio dirtinguunr.Ceii" trum quidem inftrumcnti cenec…
Cosmography · Geography
Internet Archive · John Carter Brown Library · Public domain (published before 1931). Free to use for anything.
![An illustration from Introductorium co[m]pendiosum in Tractatum spere material[is] m[a]g[ist]ri Ioa[n]nis de Sacrobusto que[m] abbreuiauit ex almagesti sapie[n]tis Ptholomei Claudij ph[ilosoph]i alexa[n]drini ex Pheludio p[ro]geniti (1506)](https://img.insideoutlibrary.com/img/200/ia-introductoriumco00sacr-145-0.webp)
