5^2 ON THE ANTIQUITY OP 



into this part of India^ as appears from the formula 

 for calculating the Sonkrantiy about the year 1 190 of 

 HaJici; or 167 years after its date — The formula 

 given in the Brohma Siddhanta for calculating the 

 ^\mkranti for Bysack, (i. e. the instant the Sun enters 

 aries according to true motions) makes the time come 

 cut later by one Hindu minute, than the Bhasvofi. 

 Hence, supposing that the formula of each when 

 WTitten, was regulated or made to agree with the 

 •Siaya SkldJunita, which was then the standard 

 work; the Brohma Siddhanta must have been de- 

 duced from the Bhasvoti, about 43 years after its 

 it'itrod action into this part of India: or about the 

 year 1233 of S'aka. This conjecture, if true, may 

 be of use in pointing out the epoch of the forgeries 

 of their eighteen Siddhantas, &;c. as it is probable, 

 the whole may have been done nearly about the 

 same time, to answer some particular purpose the 

 Brahmins might have then in view. 



77. The mean annual motions of the Sun, Moon 

 and planets, according to the Bhasvoti, Bromha 

 iiiddhanta, Kish?iu Siddhanta^ and some others, are 

 -as follow: 



78. The length of the year, according to the 

 above-mentioned works, is 365^'' la""' 31' 50"; hence 

 we get the follov.'ing mean motions of the Sun, 



Moon 



