Blancanus, Josephus, Sphaera mvndi, sev cosmographia demonstratiua , ac facile methodo tradita : in qua totius Mundi fabrica, vna cum nouis, Tychonis, Kepleri, Galilaei, aliorumq' ; Astronomorum adinuentis continentur ; Accessere I. Breuis introductio ad geographiam. II. Apparatus ad mathematicarum studium. III. Echometria, idest Geometrica tractatio de Echo. IV. Nouum instrumentum ad Horologia

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27112TRACTATVS pore paralellos à Sole percurri. Pariter ſi tria puncta arcus diurni hor. 14. vel 10. quæ ſunt ſingula in
ſingulis trium linearum, iungantur linea curua punctuali indicabunt tempus eorundem arcuum.
ex
quibus omnibus erit abſolutum Horologium.
Poſtremo adhibenda ſunt quædam examina. Primum, ſi erratum non eſt, ternæ horæ Italica,
11Examina Aſtronomica, &
Babylonica debent ſe mutuo interſecare in ijſdem punctis æquatoris, ideſt, ternę il-
læ quæ ſunt deſcriptæ ad eundem locum tympani.
Secundum, aliæ ternæ Italica, Aſtronomica, &
Babylonica, ſe mutuo ſecant in eodem puncto arcus diurni hor.
10. necnon hor. 14. vti ſequentes
Tabellæ indicant.
Ternæ horæ huius Tabellæ ſe mutuo fecant in linea Æquin. ſiue in arcu diurno horar. 12.
tam in verticali, quam in horiz. horol. excepta hor. 12. Ital. in horizontali.
22
# Bab. # 1 # 2 # 3 # 4 # 5 # 6 # 7 # 8 # 9 # 10 # 11 # 12
Horæ # Aſtr. # 7 # 8 # 9 # 10 # 11 # 12 # 1 # 2 # 3 # 4 # 5 # 6
# Ital. # 13 # 14 # 15 # 16 # 17 # 18 # 19 # 20 # 21 # 22 # 23 # 12
Ternæ horæ ſeq. tab. ſe ſecant in arcu diurno hor. 14.
33
# Bab. # 24 # 1 # 2 # 3 # 4 # 5 # 6 # 7 # 8 # 9 # 10 # 11 # 12 # 13 # 14
Horæ # Aſtr. # 5 # 6 # 7 # 8 # 9 # 10 # 11 # 12 # 1 # 2 # 3 # 4 # 5 # 6 # 7
# Ital. # 10 # 11 # 12 # 13 # 14 # 15 # 16 # 17 # 18 # 19 # 20 # 21 # 22 # 23 # 24
Ternæ horæ ſeq. tab. ſe ſecant in arcu diurno hor. 10.
44
# Bab. # 24 # 1 # 2 # 4 # 3 # 6 # 7 # 8 # 9 # 10 # 11 # 12 # 13
Horæ # Aſtr. # 7 # 8 # 9 # 11 # 12 # 1 # 2 # 3 # 4 # 5 # 6 # 7 # 8
# Ital. # 14 # 15 # 16 # 18 # 19 # 20 # 21 # 22 # 23 # 24 # 1 # 2 # 3
Binæ horæſeq. Tab. ſe mutuo ſecant in linea meridiana, ſiue in linea hor. 12. Aſtron.
In meridiano tamen ſunt æquidistantes.
55
Bab. # 1 # 2 # 3 # 4 # 5 # 6 # 7 # 8 # 9 # 10 # 11 # 12 # 13 # 14 # 15 # 16 # 17 # 18
Ital. # 23 # 22 # 21 # 20 # 19 # 18 # 17 # 16 # 15 # 14 # 13 # 12 # 11 # 10 # 9 # 8 # 7 # 6
Bab. # 19 # 20 # 21 # 22 # 23 # 24
Ital. # 5 # 4 # 3 # 2 # 1 # 24
De vſu Inſtrumenti vniuerſalis.
ERit tympanum erigendum in quadrante, cui incumbit, ad altitudinem poli dati loci, vt in no-
ſtro exemplo Parmæ ad gr.
44 {1/2}. pariter in Horario duæ lineæ Italica, & Babylonica debent fa-
cere quælibet in ſuo quadrante eundem angulum altitudinis poli cum linea Aſtronomica.
Quoniam in hoc vniuerſali Horario nec hora Italica, nec Babylonica terminatæ ſunt, neque pun-
ctis declinationum aliorum paralellorum notatę, ideo primo opus eſt deſcribere tropicos, ac ſi libue-
rit, reliquos paralellos auxilio horæ Aſtronomicæ, quæ in huiuſmodi punctis diuiſa, ac terminata
eſt, hoc modo.
Manente Inſtrumento aſtronomicè ſito filium extremitati ſuperiori lineæ Aſtrono-
micæ, ideſt, puncto D.
Horarij applicatum atque extenſum pertingat vſque ad parietem, ibique vbi-
cunque fuerit horarium notetur punctum, ſicque gyrando horarium ſuper tympanum, notentur in
muro crebra puncta, quæ repræſentent tropicum ♑.
eodem modo delineandus eſt alter tropicum ♋.
necnon reliqui paralelli. Poſtea eadem ratione, qua ſupra cum particulari Inſtrumento, deſcriban-
tur in muro lineæ Ital.
Aſtronom. & Babylon. vſque ad tropicos tãtum; ſiue enim lineæ horarij ltal.
&
Babylon. ſint longiores, ſiue breuiores, quam pro data altitudine poli, ſemper tamen earum ter-
mini in muro debent eſ@e tropici.
Quando ſunt longiores, filum continendum eſt intra trop. in pa-
riete;
quando ſunt breuiores, earum portiones deſcribendæ ſunt maiores quæ haberi poſſunt: & po-
ſtea producendæ ſunt auxilio regulæ recta vſq;
ad vtrunq; tropicum; hac énim ratione non tantum
terminabũtur à tropicis, ſed etiam à cęteris paralellis ſignorum, &
arcuum diurnorum 10. & 14. prius
deſcriptis, ritè ſecabuntur.
In cęteris igitur agendum eſt ſicuti in vſu particularis Inſtrumenti.
3 Tandem notandum eſt poſſe eodem modo in quouis plano quantumuis inclinato atque etiam
horizontali horologia deſcribi.
Si in ſuperficie inæquali concaua, aut conuexa; lineamenta tamen
eſſent fimiliter curua, quæ quia raro contingunt, &
ex dictis facilia, ideo Lectoris prudentiæ re-
linquantur.

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