2G8 G. Tliibaut —Varciha Mihira^s Pancliasiddhdfdikd. [No. 2, 
the doctrnes of another work, and as such it would be of no value 
whatever if it were not strictly accurate. We shall moreover meet later 
on with several other instances showing that the mere fact of Yaraha 
Mihira’s statements not agreeing with the known Surya Siddhanta is 
not sufficient to throw a doubt on their accuracy. It is finally to be 
remarked that the solar year of the Surya Siddhanta as known to 
Yaraha Mihira is identical with the solar year of that Paulisa Siddhmita 
about which Bhattotpala in his commentary on the Brihat Samhita has 
given us some information (Gf. Colebrooke’s Essays, II, p. 365). 
We next turn to some verses containing rules for the calculation of 
the mean places of sun and moon according to the Siirya Siddhanta. 
They are found in the 9th adhyaya : 
“ The (mean place of the) sun is found, for midday at Avanti, by 
multiplying the ahargana by 800, deducting 442, and then dividing by 
292,207.” 
This verse contains two elements which are to be considered 
separately; in the first place a general rule for calculating the mean 
place of the sun, in the second place a so-called kshepa, i. e., an either 
additive or subtractive quantity whose introduction into the rule enables 
us to take for the starting-point of our calculations the epoch of the 
karana instead of the beginning of the yuga. The general rule is 
understood without difficulty. It bases on the * proportion: if in 
65,746,575 savana days (^. e., the savana days contained in 180,000 
years), there take place 180,000 revolutions of the sun or, both numbers 
being reduced by 225, if 800 revolutions take place in 292,207 days, 
how many revolutions will take place in the given ahargana ? The result 
is the mean place of the sun at the end of the given ahargana. We now 
turn to the kshepa 442. If on the first Chaitra S'aka 427, whicli date 
is the starting-point of all calculations of the Panchasiddhantika,f the 
sun had performed an entire number of revolutions without remainder 
a kshepa would of course not be required. The actual kshepa, 442 on 
442 
the other hand shows that at the mentioned time " were wanting 
292207 ^ 
* Both manuscripts read in the first line in the second 
The second emendation is shown by calculation to be necessary. Both emendations 
are borne out by the manuscripts of Bhattotpala who quotes the above verse. A. 
reads 
t See about this point the rule for calculating the ahargana which will be 
discussed later on in connection with the Roinaka Siddhanta. 
