ASTRONOMICAL LABOURS OF JAYASINHA. 187 



aftronomers of antiqui- JuL* ^<3 -Ia**j C^O 



ty beftowed many years ^ oJ , " ' ^ 



on the practice ot ob- y* ; ix # iX • .. / 



fervation, thus, for the /*U* <-^ ^Jy** ^i^ 



eftablimment of a cer- d> C^T" i** g fl ^Jc^Um 



tain method, after hav- V^-fl*fe Jv^ ^ • 



ing conftrucled thefe v -> »/V*. c/^>^ 



inftruments, the places 0>^ <->****-* <-\s* J * »*V^ 



oftheftars were daily vJ^^L^C^JL^^UC^C^wV 



obferved. After feven * „ s* .. .-. ^ _ , .. .♦. 



years had been ipent in - / G- 7 ^ ^- 



this employment, in- /^ O^J/~ C*^ -^/^ 



formation was received, (^£0^o^ Ui^T* o*£> lSo 3 



that about this time ob- * j cf y •! \ < .. v 



lervatones had been J* -? 7 •* -. 



conftructed in Europe, ^j\Ji+j\ ^t-'UI^ • Ls:"'! 



and that the learned of ^JJ&Sm, <-i-\JJjb 



that country were em- -^ .i ^^ 



ployed in the profecu- °^ AjbL^jU Jul As* 



tion of this important l^ A . ^ brM ,<} 



work ; that the bulinefs \ \ i ^jf^± ' •• 



of the obfervatory was ^ ~^ "*\/ ^ 



ftill carrying on there, Jx^jI^ — V.^J y — *j£saS 



and that they were con- Jv^, . , . ,. ' * . . 



ftantly labouring to de- U ? C ^ J* ***\ • . 



termine with accuracy, *a-£ cX^ax^ (j^-> <Aa^, 



the fubtleties of this fci- \^\j {^y** w^J (_£lj«^ 



ence. For this reafon, 'bcCiOU Ju^'c^Li 



having lent to that \f •••• v •*?- 



country leveral ikilml . J x 



perfons along with Pa- Ij <xJ Ls: j 'T~ (JocX^.. gf-y 



d re Manuel, and hav- * ;l , * : P ■ 



ing procured the new vy,,," ^ ^T\Z ., 



tables which had been C_5\/~ . a->A>d JO JL* 



conftruaedthere thirty ^Lsrf • b jJ^J u^J - 



vears* before, and pub- r .1 v </ * ^ ••' / 



limed under the name *-***** JV^O ' ^ J*j 



of Leyyer -j~, as well as 2 ^^-r* y ^ **^* ^^ ' 



* Jeysing nnifhcd his tables in the year of the Hijira 1141, or 

 A. D. 1728. 



f De la Hire, published the firft edition of his tables in 163/, 

 and the fecond in 1/02. 



M 2 « the 



