TrojjoJttio, Part, Iii,

TABELLA A.

Refcrcns Altitudines Signorum tempore

tij aeftivi ad Latitud. 48. grad.

Signa Coeleftia

Altitudinis Gradus

Min uta

ö?«

3°*

6 3.

39 %

58-

4?*

00.

44.

12.

?>*•

48«

27•

- 4*

18.

-8-

'9-

-6.

EX hac igitur Tabella pro decimogradu accipianrur gradus63. min. 50, (juxta menfuram Me-ridiani) g, utrinqueope circini

deorfum proferantur in h, 5 Sc ibidemBotentur pun&a, idque Eatetiam inSignis oppofitis, totidem gradus exh. transferendö in g., Sc Ec peromnium Signorum deeimos quosquegradus ; du&aque poftea per hxcpunda una continuä lineä orietur ali-quaFigura Elliptica , quseeft Hori-zon ad Planifpliasrium, Sc. Lacitudi-nem loci propofitam.

VIIL Idem Horizon faciliusad-liuc defcribitur per folas alcitudineshorarias hoc modo. Impofirä Regu-la centro A. Sc fingulis iy. gradibusjEquatoris verfus utrumque Tro-picum producantur linea: re&sejverbigraria c. m , b. n., a. u. See., Sc in eas-dem ab ipfo iEquatore transferan-tur altitudineshorarise, Evequas folad Engulas horas obcinet in iEqust-tore confiftens. I a in meridie exR.in F. transferanrur grad, 42« min. o.

(quanta nimirum eft altirudo Meri-diana in Latitudine 48. gr, o. min, )Sc ibidem notetur punctum F. Eo-dem modo in lineas horse XI. Sc I. exc. in m.transferatur alcitudo folisgr,40. min, 16. Rurfus cx b. in n. lineashorse X. Sc II. rransferatur akitudofelis grad. Sc min»25-, Irem exa. in u. in lineas horse IX. Sc III alti-rudo folis grad. z$. Sc* 4. min. Atquehse altitudines transferantur enam inlineas horarias oppoEras, Sc deindepundta notata contrahantur inunamFiguram Eliipricam, eaque erit Hori-zon quaditus particularis, Sc adunumtantum locum EveLatitudinem accu-rate compoEtus, Idcirco ut Ledoretiam ad alia loca Horizontem accu-ratum poffit habere, modum hic fub-jungo computandi altitudinesiEqua 0torias ad quameunque loci Latitu-dinem.

Folio GG Figura III. fit Meridia-nusN.A.ß K,,HorizonN-C.B.,Äqua-tor M.C I)., cujus pars diir na tem-pore i£quinoclij M. C. dividatur in

partes