45 ci METHODVS 0BSERE4ND1 



J\l demitt:itiu pcipcndicii!:iris M p , iiingintiirque pnnda 

 jM et L lecl.i M L , et toim;ibitiir indc tri.ingiihim M /) L , 

 in i|uo pcrpcndiciiUim ]\\ p ct dill;inti:i cins ;i ccntro 

 Lun:ic p L pcr oblcrnationcm i """" §phi ;uucccdcntis d;in- 

 tur , >ndc linc;i quoquc IL cr anii,ulus /> L M inuenicn- 

 tur. V" Subtraliatur angulus p L M nupcr iiuicntus ab 

 angulo pL e — ^\ d a nro prirwo dato [ ob linc.is ncm- 

 pe / « ct q r parallcKis intcrlc , linc:imquc L e casdcm 

 fecantem linc:ie M </ parallchm) ct rclhbit angulus MLo 

 5'" In triangulo rctftangulo M L datis pcr ?}riim 3''""» 

 hypotlicnula M L ct pcr nrmn 4'"" angulo M L in- 

 venicntur l.itcra L ct M zz. « ^ partibus tcmporis ad 

 motum pnncli M rclatis cxprcffa. 6'" Addatur linca L 

 ad liiicam f rz M h nro 1^° d.itac , ct prodibit linca 

 L e diflfcrcnti.i dcclinationum ccntri Lun:ie ct ftelhic mo- 

 tu punfti M cxprclTa. 7"" Vt autcm lincac hac L e 

 ct ;; e in partibus tcmporis ad motum flcUae rclatis ha- 

 beantur , fi.it iUatio : vti lc h.ibct tcmp.is tranfitus puiiifti 

 M pcr lincam ;j c , (upra ex obfcruatonc i"^ §phi an- 

 teccdcntis datum , ad tcmpus tranfitus KclLic pcr candcm 

 lincam ibidcm cx oblcruationc z'^ cognitum , ita linca 

 he nro 6'" , vcl ne nro 5'", in ofcillationibiis horolo- 

 gii ad motum puiKfli M rclatis data , ad ofcilfotioncs ho- 

 roloRii motum llcllae cxprimcntes eidcm compctcntcs 

 quacfitas ; ct dabitur hoc modo diffcrcntia declinationum 

 ccntri Lun.ic tt llcllac fcu linca L e motu ftcllae cx- 

 prcflli \ quacfitonnn priwum , ncc non linca ;/ e. 'l";indcm 

 8** addantur olcillationcs horologii lincam » c cxjirimcn- 

 tcs niipcr inucntac ad ofcillationcs horolog ' a contadu 

 ftcliuc S cum capillo 13 D ad occurfum pmivU M cidcm 



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