552 ON THE ANTIQUITY OF 



Venus, revolutions 1755590 



Mars, 574209 



Jupiter, ■ 91053 



Saturn, ■ • 36645 



24. Comparing these, with the numbers in the 

 same period, by the Surya iSiddhajila (§ 22), it will 

 appear, that the number of revolations of Mercury, 

 according to that work, is - 5 greater, 



Of Venus, - - 4 greater. 



Of Mars, - - 1 Jess, 



Of Jupiter) - - 2 greater, 



Of Saturn, - - 3 less. 



Tliese differences, the jfTz/zf/z/ astronomers call beej > 

 or the corrections to be applied to the mean places of 

 the planets, computed from the Siaya Skldlianta *. 



25. Having thus given the revolutions of the sun, 

 moon, and planets, in the cycle of 1080000 years in 

 imitation of the Surya Siddhanta, I shall now shew 

 their use in determining the mean longitudes of each 

 at any time proposed. 



EXAMPLE. 



Let the time be the end of the year 4900 of the 

 Call yug, or i\\& 12 Aprily 1799, at 51' 40" past four 

 V. M. on the meridian of Pa/vV ; to find the mean 

 longitudes of the sun, moon, and planets, in the 

 Hindu sphere, at that instant. Say, as 1080000 is to 

 the number of revolutions in that cycle, so is the num- 

 ber of years expired of the Caliyiig, to the planets 

 mean longitude at the end of that time : Thus, 



* In the S'uWianta Rahosyo, dated in 1513 Saka, the beej or cor- 

 rections are as follow : Mercury 4; Venus 3 ; Jupiter 2; revolu- 

 tions in 1080000 years substractive ; and Saturn 3 addittive ; the 

 Gro'io Torongini dated in 1530; iiidiUiania Munjtii dated in 15.'>I 

 Saka; Bisuhito and tables ofCuKisNAiJORAM (all of which have 

 been deduced from the Swja Sul/liaiitn) adopt llie ^eri to correct the 

 mean longitudes of the planets, as cojnpiUed from the motions de- 

 duced from the Sujja SidJhtaita, 



Revo- 



