idonea ratione litteras A, B, C, D* etc, defignemus, unde 

 ftatim liqueat , ad quodnam multiplum anguli (p fingulae 

 referantur. Ponamus fcilicet A ~ (o); B~ (i ); C = ( 2); 

 D~(s); E = (4)3 etc. hoc modo feries poftremo loco in- 

 venta erit 



(o) ~f- (s) -f- (16) -+- (24) -+- (32) + (4.0) -f- etc. 



3 



§. 9. Satuamus iam fucceffive pro (f> angulos J 7r • 

 m > s ^» 8 ^y ac P onencl0 brevitatis gratia cof. \ tt ~. (3* 

 cof. | tt zz: b , ut iit |3|3-h-bb~i 3 erit cof. | tt =: - — b ; 

 cof.]-7rzz: — (3; cof.^Trzz: — j3; cof. 1 *' 71 — — b, cof." 7rzz:-hb; 

 cof. Y 7r zz -f- (3 ; cof. J 8 7 iz ~ |3; cof. x | 7r =2 b; etc. tum vero 

 feries hmc refultantes erunt; 



r ; I 7T =z (o) + p (1) ,*. * (,) -*- b (3) -+- o ( 4 ) - b (5) - a (6) 



-£(7)-i('0-£G)-«0c)-b(ii) 



— o (12) -t- b (13) -+- a (14) -+- (3 (15) •-+- 1 (16). 



r : ! 7T = ( o ) -h b ( 1 ) - a ( 2) - (3 ( : . ) 4- o ( 4 ) h- (3 ( 5 ) h~ a ( 6 ) 

 - b (7) - 1 (s) - b (9) rf* a (ic) -+■ (3 (1 1) -f- o (1 2) 

 -p(i3)-a(i 4 )H-b(i5)-+- 1 (16), 



T :|- zr: (o) - b (1) - * (:) +- (3 (3) h- o (,) ~P (s)+ «(6) 



-+- b (7) — 1 ( ,3 ) -+- b (t ) -+- a ( 1 o) — [3 ( 1 1 ) -+■ c ( 1 2) 

 ■+-P( I 3)-a(i 4 )-b(i5)rt- 1 (16). 



r ; I 7T -; (0) - (3 (1) * a (,) - b (s) -4- o (4) 4 b (5) - a (6) 

 + P (7) ~ 1 (S) + (3 (9) - a (ic) + b (1 3) ~ c (^) 

 -b(i3)-f-a(i 4 )~^(i 5 )H- 1 (ic). 



Iam harum quatuor ferierum fumma per quatuor divifa erit 



N z (o)~ 



