l7B 



SOME ACCOUNT OF THE 



mathematical fciences, and his reputation for fkill in 

 them itood fo high, that he was chofen by the Empe- 

 ror Mahommed Shah to reform the calendar, which, 

 from the inaccuracy of the exiiting tables, had ceafed 

 to correfpond with the actual appearance of the hea- 

 vens. Jayasimia undertook the talk, and conftrucled 

 a new fet of tables, which in honour of the reigning 

 prince he named Zeej Mahcmmedjhahy* By thefe alma- 

 nacks are conitructed at Dchly, and aH agronomical 

 computations made at the prefent time. The beft and 

 molt authentic account of his labours for the comple- 

 tion of this work and the advancement of agronomical 

 knowledge is contained in his own preface to the T^ecj 

 Mtihommedjhah', which follows with a literal trani 

 lation. 



' Traife be to God, 



* fuch that the minutely 

 4 difceraing genius of the 

 c profoundeit geometers 



* in uttering the fmalleft 

 c particle of it, may open 

 ' the mouth in confef- 

 c lion of inability ; and 



* fuch adoration, that the 



* ftudy and accuracy of 

 c aftronomers who mea- 

 < fure the heavens, on 

 6 the fir ft ftep towards 



* expreffing it, may ac- 

 6 knowledge their afto- 

 6 nifhment and utter in- 

 c iufficiency. Let us 



* devote ourfelves at -the 

 6 altar of the King of 

 & Kin firs, hallowed be his 



* name ! in the book of 

 6 the regifter of whole 



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