4.3<s METHODJS OBSERTAyDl 



num Solis ficilc iniicnictiir. Praetcrei diUa qinintitatc fcg- 

 menti vmbroli Lun;ic in dilco Solari conlpiciii , acquAli 

 diliintiac c.ipillorum o p ct ^ r diamctcr qnoquc Luuae 

 dctcrminabitur vt liipra. Dcindc linu vcrlb lcgmcnti vm- 

 brofi Lumie maiori flido diU.mtia capillorum o p ct q r ^ 

 in phafibus \ltcrius obfcruandis capilio o p ad coraua pha- 

 feos fcmper dircclo , uotandui crit :ippuilii> limbi vmbrofi 

 Lunae i;im ad capiilos qr ct o p , non vcro ad o p cc 

 B D , vt fupra fadum , ct fic porro jd maximam v?quc 

 oblcurationcm , Icu litum chordac dcftdiuac diurno So 

 lis paiallclum. Poll hacc inlhtuantur itcrum oblcruationcs 

 obfcurationum Solis dccrclccntium cum inclinationc chor- 

 dae dcfediuac ad diurnum Solis , et fuiu vcrlb lcgnunti 

 vmbrofi in dilcum SoHs tcmporibus obfcruationum por- 

 re<flo , notando ;ippulliis, piius limbi luminoli S()li>, dcinde 

 limbi obfcuii Luiuic , Ilitu ccliplcos tunc ita lcicntc codcm 

 prorfus modo , quo fupra oblcurationcs crclccntcs obfcr- 

 vatae funt , continucnturquc ahjuc ad fincm cclipfcos , ct 

 ablbluta crit obfcruatio edipfcos Solaris. 



Schol. Qiioniam in mcthodo hac circa maximam 

 obfcuratioucm , vbi ncmpe lcgmcntum lucidum lpc(fl;i 

 culi ccliptici aut fcptcntrionalc aut mcridion.iIc cll , 

 pcr quadrautcm horac ct aiiiplius oblcruatio talis inlhtui , 

 ct plcrumquc maxima ctiam oblcurat o a(flu dctcrminari 

 non potcfi. lUo ita()uc tcn poic , quod alias rccrcationi 

 oblcruatoris optimc conccdcti r , fi lubct , dirigatur capillus 

 nibi transucrfus :id cornua p|-,a'cos , tranfitusqiic limbi So- 

 laris pcr duos capillos oblciuctur modo lajiicnti ; fit Ic : 

 (Fi^. 5. ) circukb a \: h b m a , tluais Solis , a i b u a ^ 



dilcui 



