+03 D E M O T V 



plicatas txprimi potcft ; cum ex coutinu.itiouis in- 

 dole fit 



I. SYS'T^=:«(SY-S^YO 



II. S'' T'' S''' X"' — a (S'' X''~S''' X''') 



III. SYS^/T/^in^CS^^T^^-ST) 



IV.S^T^-S^^T^^^^CS^n^V-S^-TO 

 erit combinando : 



IV-i. STS'^S'^z=:^(S'^r'^-S^TO-a(ST-S TO 

 II-III. STS^^-^T/^/zztf^S^l^-S^^T^O-Z^^S^T^-ST) 

 vnde colligimiis aream 

 S'"Y'''S'^Y'^-(Z'-fl)(SY-S'Y'-S"Y"j + ^S^Y'^--«S'"Y'''. 

 In qua fi valorcs pro his applicatis inuentos iublU- 

 tuamus rcperitur ifta area poiicndo S Y zr v 



-s s ?_ ^ ^ L L -A 



-a~^\^ "fc^ ydS-e^ fe '^y d^^-^e ^^ fc^ y dS-e''' f e ^j d S) 



\bi integralia ita capi debcnt vt ca, qu;ic inuoluunt 

 a cuanekant pofito S — cr, alicra vcro pofito S rr b. 

 Hacc crgo exprcilio pro arca inucnta in 5 S dudi 

 praciict fpatium translationis S s. Dcinde pro reli- 

 quis elcmentis iiabcbinuis : 



SiVYir_ s'/iT'''r 1^!^\^ /yO^S 4- ^ ^V^S'^S+ J,^V^ V 

 et 



S^T"^+S"'T'"- zj - f^^, e^fe^jdS^ ■ e^fe^ ydSv/je~jdS- 1 c'^ f? y dS) 



CorolL 



