ASTROKOMICtS. 4'5r 



eir' — ir-f-O) pn cr — '^ (fq. — 0-4-^ 



g U" — TT' -t -TT 4> — P O R • © — '^^' -"Q-R^-^T-f-H* 



ex quibus valoribus vici(rjm colligiiDUS 



B-^; C^rlis'' D=:-£-^ = cN:,ob©-i ficque, 



omnia tkmenta per litteras P, Q et R erunt ex- 

 prclTa ; -vbi aiite omnia requiritur vt interualla lcn- 

 tium prodeant pofitiua. 



§. 15. lam fi ^ fuerit maximus valor, quem 

 litteris t, ti' et tt" tribuere licet , pro quo affumi 

 poteft ^~\-^ vt maximum campum adparentem ob- 

 tineamus, ftatuamus 



71:=^; 7r' = -^ et 71" = + ^ 

 vt prodeat 



zz -^- vnde fit M =: -^ et C}) =r M ^ 



T^ m -f- 1 m -f- 1 



hinc igitur fumendo ^zz\, in minutis primis fiet 

 (p — -!^^^^, min. 1= -?^ min. 



I 4 (m -f- ij m -f- « 



Ex his igitur valoribus nancifcimur 



S3=:(i-P)Mi€=M(i-PQ.)-iiSrM(wfi)-a = x 



vti priirae conditiones requirunt. 



§ i<J. Pro margine autem colorato toUendo 



huic aequationi fatisfieri opportet 



!L — ^ -1- ^" — Q 

 p PQ.~'paR — 



quae ergo abit in lianc 



p-^-p^-^fiR-o ^^"^ '"^'''"^ ^+Q.+ ^=o 



M m m 3 ' cum 



