cof. '.'b V(i -he) 

 y i^i-i- e coi". (pj 

 _ gcof. .; (^ y(i H-Q . 

 ^ y(i H-f coi. (pj 



cof. ' v|^ cof J v|/' (i -4-0 -4- fm. ! vjy fin. | v|.Vi ~-<^) 

 y (l -i- / COl". VK^ "+" ^' cof. V[y^) 

 _ f^(cof l vj^ cof. ^ \|/^ri^ O- iin. l vP fin. ' viy^fi-/) ^ 

 ' y (i H- ^■'coi'. vj (^ ■+" ^''coi.\4^''j 



ob a— j3 =: a''— (3^ et a(3 = ap, iit a = a, |3 — j3i hoc eft 



coCl^pyfi-^e) _ cof^'/cof jvl^^(i-^0-^f]n.Kl/fi n.!vJy^ri— O 

 y(i-H7col".Cp; yy I + ^' cof \\^j {i.-\-e' coi". vO ' 



nec non 



ecoQ(pV(i-^e) _ /(cor^v lvcor.^vJyYi-^-fQ— fm.fvjyfin.f''/ri— ^^^) 



y(i^^cof cp; y(i-+-^'cof vj^) '^i-f-^^cof vj^'; 



Tum vero ex priori harum aequationum colligitur fimul 



fm.i0y(i— _ (fm. i vjy cof ^ v!/— fin. l v|>^c o f f v'/ y ri— Q 



y(i-+-fcof cp) ~ y(i-h/cof vj^) (i~j-y coi.vO 



qua per poileriorem multipiicata fit 



fimulque patet eife 

 Arc. cof (^±^ = Arc. cof (^^g^ -Arc. cof ( ^lT/:' t^J ^ 



Ynde omnino colligitur fedores Ellipticos eife in ratione lub- 

 dupla parametrorum principalium. Caeternm m.emorabilis pro- 

 prietas angulorum vp et v[>^ heic locum habet, quae omni- 

 no attentione digna videtur. Quia fcilicet eil: 

 cof^/^i-^f) _ cof ■ ^ co{\\ vj./ 1^/) -4- fip.x v! - fm.^ vl/ri— O gj 



•|/(^i-+-fcoi.cp; ~" ~ /(!-+- / coi; vjy) (^ 1 -+- / coi. vO 



^ cof 



