453 METHODVS OhD^w.i^jj^i 



ne tiibi nonnifi taediofilTimc obtincri potcfl , ncccfl-irio 

 it;u-]uc :ul huiiisnvxli oblLru;ui(incs machinA piirilhuftica 

 o^u> crit. Cum ;uitem in mcthodo §iz""'0 dclaipt;i ;id 

 e;isdcm obfcruatioues inltitucnd;is rcpctit;i dircaiouc ca- 

 pilli G C :id diurnum Lunae vcl llclhic opus non fit , 

 poterunt eaedem methodo h;ic absque omni vfu machi- 

 nac paracticae ;\blblui ficillime , hcet calculus indc pro- 

 lixior aliquantulum prodcat, ct dcficicntc m;ichina omncs 

 oblcruarioncs l<Korum Lun;ic hac mcihodo inlUrui , quo- 

 cuuque cx liipra dclcriptis niodo llcUa ad Lunam pona- 

 tur. 



Scbol 4'"'" Practerea quoniam diamctcr Lunae mo- 

 tiisque cius in diurno , Luna diuerliis altitudincs lupra ho- 

 rizontcm tenciue , ob variatit)ncni paraliaxeos cius.dcm 

 inde oriuiidani mutantur aliquaiuulum , ct maiorcs vcl 

 niinores cuadunt ■ conucnit in praxi poll ablbluras ob 

 fcruationcs locourm Lunae ad llcllam , diamctrum Lunac 

 motumque ciunlcm in diurno , ct fitum maculac in dilco 

 eius denuo obfcruare , modis in §8^° et §io"'o dclcriptis, 

 tcmpubque obli^ruationis vti prius annotare , vt innotclcant , 

 fi quac (iint , difFercntiae corum tcmporc inter oblcrua- 

 tiones eornndcm intcrccdcntc f-idac , ct inde vcnie quan- 

 titates priorum , vcabque fitus polkrioris ad tcmpus cuius- 

 libct obfcruationib loci Luiue ad llcUum dcliuiautur. 



§.13. Dclcriptis hadcnub mcthodis loca Lunae rc- 

 fpc.flu acquatoris determinandi in corollariis cx cclipfi 

 Lunac obfcruata deducendis necefTiria , ad iplas ctliplcs 

 Lun;ie ;icccdo. Pro iis itaquc oblcruaiidis attcndntur in 

 primis diligcntcr ad ca,qu:ie §3''" dicla (unt. D.iiule ob- 

 icruato ioitio ccliplcoi diriij;uur , vcrtendo iutra tubuin 



ciicu' 



