5^2 DFTmMlN. CJLOR. ET FRIG. GRAhVrM 



gradum' caloris coQdantem m (iiperfieie folis^; P eleuaiioi* 

 nis poli in loco propofito finiim , Q^ finiim dcclimuionis 

 folis bor&ilis j atque p tt q cofinus fulibus P et Q^ refpon- 

 dentes. Denique k efl tnngens (cmidiametri folis appa- 

 rentis , atque / denotat iplum calorem meridia^inm tem- 

 pore oblato. 

 jab. fo §. 25. Denotet ergo AVB aeqiTaforcm, ef EVL 



^^' ^* ecclipticam , . interiectio V aequinodlium vernum atque ?" 

 polum ioci propofiti. Verfetur fol in S pofi: aequinOdiunt 

 •vernum , et ponatur arcus V S =: j exiftente tota ecclip* 

 ticaiz:2 7r- atqiie fit arcus VS finus zz « • angulique S 

 VT, qui eil 23° i^^ finus zz ?// ; calor meridianus a:u- 

 tem 5 dum foi in S \erfirur zz: r. His pofitis erit Q_:^ 

 mu^ et q-z^V {i. — ni'uu) \ ac dum fol per arculum ds 

 progreditur erit incremenrum caioris meridiani dr — 365^ 

 ads\cK'mVu^^'^f^-r) exiftente ds — 

 iU^uu) ' ^omtm breuitatis grritia n pro numero 36"5 a. 



erit dr-hnrds m {cx. mVti -i ^jp^^ ■ ) nds. 



§.25. Poftrema haec aeqiiatio integrafa dabit c^^r:n 

 ^K^nJc^^ds {mVu + ^4^"') == ^' e^^' {nu- V 

 ii-uuy) -f- ^^—-Je^^^ds y (i-;;/V). Ad integrala 

 fofterioris membri inueniendum oportet nofle , effe Je''^i^ 



^^nj^^v-, (^^^_j,y i^^uu)) -+- y [v-j) Je""' v:*-' d's'^ 



ds — ; " ^^ — -.. 



nn -\- V 9 



Tnde ei? /^«^/j - — ^ /^«^ z/^ j zz — ^- ^ ^-^^^^ 



^ns- ( 2 -4- ;/V - inu V n — f^« ) ) ^ .. 

 -^ -= . . . r^pn^^. ^j -^ 



