45<^ METHODVS OBSERf'A\DI 



ris , ciim capillo H F obtiiict , appclhitqiie ftelh S in 

 diiirno liio S e inccdcndo ad capiUuni obli(]iuini R F in 

 a , ad priiniim parallclonim A E in J ct ad lccundiim 

 u\ m e , lit practcrca linca L ^ , a ccntro Luiiac L in 

 diurnum llellae S i' pcrpcndicularitcr dcmifla , dilfcrentia 

 dcclinationum , et S ^ ditfcrcntia alccnfionum rcclarum Lu- 

 nae ct ilcilac tempore contaiflus limbi Lunac M cum ca- 

 pillo H F obtincntcs quacrcndac. Qiiarc duvfta linca e ^ 

 p:irailela ad G C , dcmiflbquc a ccntro Lunac L ad can- 

 dcm G C perpcndicub L o , quacratur primo , in trian- 

 gulis e / /, ct e g a hinc formatis rctflangulis ct fimi- 

 libus pcr conflr. [ datis per obfcruationcs modo in §8^® 

 iiiis 1'"° et z'^ dcfcripto inflitucndas latcribus comm ef^ 

 f a ^ et e Izz: h c] linca a m , infcrcndo \t e j : e I — 

 j a : Ig ^ c m ~ a m , ob angulos /// c a ct in a c fcmi- 

 rcclos ct acqualcs pcr conllrudion : Dcindc 2'''' rcrohia- 

 tur triangulum rcdangulmn cg a , latcribus cius cg , ct 

 f<7, datis , pcr compolitioncm ncmpc iincarum r/, ct 

 Ig , ej ct ja nro 1"° datatum dcduccndis , ct inucnien- 

 tur inde anguli cag^ ^^Z-, ct latus ag. Poiro 3"" da- 

 tis cx oblcruationibus ^8^' lacpe citatis , difV.iniia capil- 

 lorum H F et u v , lcu linca V h ct pcr oblcniationcm 

 Scholii huius radio Lunac V , dabitur carum difllrcn- 

 tia , fcu linca ho~ e u eidcm parallclac ct intcr casdem 

 parallelas c h ct L O intcrccptae. Qiia data 4'° lincae 

 quoque ei ct /; / , ob triangula r«/, ct ega fimilia 

 pcr conflrud : lincas(]ue e s^ ct ^ « pcr wum 2 " r d;;ta» 

 inucnicntur , infcrcndo fc : pro prima , vt cg :c a — e n: 

 e i 'i pro lccunda autcm vt e g : ag znc ri : 11 i. 5'" Da- 

 tis pcr uumcros ^'"'""ct 2 ''"'■ lincis « ;/; , ct ag , ct pcr 



nrum 



