lle vero f>er 3 o huius difpom poteft fupra lineam ftyli O A licet hic non exprelfam, ita vt cum eadem faciat angulum A O X notatum in primo huius propofi- tionis fchemate : quia in vtroque fuppono omnia aequalia quoad Itylum-., declinationem , St poli eleuationem. DemonHratio primae deferiptionis… … & ita difponatur , vt recta R C cum prius eleuati trianguli latere R X in, vnam rectam conueniat , & centrum C cum vertice X copuletur ; quod quidem fieri poterit quia per conftruElionem , reda; R C, & R X fiinn aiqua- les . Quia vero iam demonftratum fupponitur ex locis hac ipfa propoji- uone…
Sundials -- Early works to 1800 · Horology -- Early works to 1800 · Perspective -- Early works to 1800 · Horology · Perspective · Sundials
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
