THE SURYA' SIDDHA'nTA, &C. 569 



the difference amounts to at present ; which being 

 divided by the above difference, gives the time ex- 

 pired, since the Swya Siddhanta is supposed to have 

 been written. 



Thus, the longitude of the Moon's apogee at the 

 end of the year 4900 of the Caliyug — 



fy ^^^ a o-j 11 X l955S84900X48S2o3 



Joy the oiiryaoiddlianta= - 



4320000 



221034461 rev. 11' 2^0 33' 30" 

 ByDE LA Lande's tables, i^iWw 



sphere (§ 30) 11 25 18 1,8 



Difference in A. D. 1799 4 15 28,2 



which being multiplied by 100, and divided by the 



difference in motion per century, we have— ^^"ro^ 



= 605 years, for the age of the Siirya Siddhanta from 

 this operation. 



59' The motion of the Moon*s ascending node 

 for a century : — 

 By the Surya Siddh an ta == 43^0000 



= 5 revolutions 4M5®19' O" 

 By De la Lande's tables, Hindu 



sphere, =4 15 51 48,7 



Difference, the former less by 32 48,7 



Longitude of the Moon's ascending node at the 

 end of the year 4900 of the Caliyug^ in anteceden- 

 tia :— 



T» i.T- o CY- 7j; ^ 19558S4900X232238 



Xiy XXi^ ourya lSiddhanta^= ^^■■imK)^ 



r= 105146017 rev. 11'0°13' O" 

 ByDE LA Lande's tables, Hindu 



sphere (§ 30} = 11 3 41 31,3 



Difference, the former less by 3 10 31,3 



Hence, sttj^t — = 580 years, for the age of 



the Surya Siddhanta from this operation : differing 

 but twenty-five years from the former. 



VOL. VI. 2 o 60. The 



