131 SOME ACCOUNT OF THE 



vatory.fuchashadbeen ^X£=, i£*JJ^ ^ ^^ 



e reeled at Sam arc and, % . 'Li^\jt Mi 



agreeably to the Mufal- ^^^ ^ \^.-\j£>^K^ I 



man books: luch as Za- . ^J , v_iJb^! ^1^ 



iul-hi(lucl\ of brais, in ^r 5 '. > * , .. 



diameter three -gux of llH ! g^iJ J^ **»J**~i 



the meafure now in life, * — *-X-*3 VV.~^ <x£==> ^2^ 



(which is nearly equal to ^^J J 1 l$| A \ 



two [Cubits 01 the Coram) -^ . . C> .. . C*< . 



Zat-ul-fuchetein y and (j^Os./vw • (^s-a.a.JL_a- J f 



SnJs-Fuk/ieri, and Jliam- s* % l | ♦ r i * 



/all. But finding that O^V <^<^ J CSjS 



brais inftruments did \ ^sp* ^ C^U^ O*^* 



not come up totheideas ' *«« -f *' ; . "^ . v 



which he had formed of p- f -/S£ ^. ; 



accuracy, becaufe of the CJ^j-O v — * — sr — ^^ — ^ 



fmallnefs of their iize, il) X^ J cy« c3jj2L- 



the want of divilion in- # ( 



to minutes, the making <o<-^ ^F*^ J C^'y^ 



and wearing of their JsXasJj j Ij<3 •£== ^c 



axes, the displacement ., t*, /r JL* x*6^ 



of the centres of the cir- •-4 J v^> 4 Cj -? 



cles, and the fhifting of IaJIc^^JU ^xajL^zd 



the planes of the inftru- &££& A A JJLx-o Co 



ments ; he concluded \ 1 < , .. ' . v , 



that the reaion why the ^ .."11 » '• 



determinations of the jJ I <^ U U J0> <o 1^ yL* 



cients,fuchasHipPAR- JUUI (j* ^y<. JAa j j (j^>- 



chus and Ptolemy u ^u , *, ^> 



proved inaccurate, mult - -7« -> -^ ^"^ 



have been of this kind; ^[Jh Ai^Xzsr I J^y^o' y/ 



therefore he conftrucl- 1 ^^ ^ ^./^ . 



ed in Dar-uUhelafet ?**". A ^ W J O**" 



Shah-JeJumabad, which (^5^^ ' ^^ ' <J ^ Lj^Lj^ 



istheieatofempireand J^ ^^ ^| j^| 



profperity, inftruments ... * -^ S? -J 



of his own invention, f^^^jj U" 'ji L^* 



fuch as Jey-pergds and &£=> aa^. AiP' v'-r" J 



Ram-junter and &w«7- ~ | ^ *&J& $ " Jo* ^Lai 



