273 
1884.] 
G. Thibaut —Vardha Mihira’s PancJiasiddlidntihd. 
Surya Siddbanta known to Varaba Mibira, mnltiply tbe 1,577,917,800 
days of tbe inabaynga by 900 and divide by 2,908,789 we get as 
quotient nearly 488,219. Yaraba Mibira’s Siirya Siddbanta there¬ 
fore reekoned so many revolutions of tbe nebcba to one mabaynga 
and it is of interest to remark tbat it tberein exactly agreed with tbe 
doctrine of Aryabhata (see tbe Aryabbatiya edited by Kern, p. 6). 
We finally test tbe exactness of onr assumption by tbe calculation of tbe 
ksbepa stated in Yaraba Mibira’s rule. Multiplying tbe kalpady-abar- 
gana as ascertained before by 488,219 and dividing tbe product by 
1,577,917,800 (tbe number of tbe days of a ynga) we get as remainder 
1226408787 
1577917800" 
Converting tbe quantity which expresses tbe fraction of 
tbe revolution incomplete at tbe epoch of tbe karana into 2,908,789tbs 
in order to render it capable of being introduced into the general rule, 
we obtain for tbe numerator 2260805 (and a small fraction). From 
this positive ksbepa we finally deduct 450 = half tbe daily motion of tbe 
nchcba in order to carry back tbe mean place to the preceding noon ; tbe 
remainder 2,260,357 differs by one only from tbe ksbepa stated in the rule. 
It thus appears tbat tbe number we bad assumed for tbe revolutions of 
tbe nchcba according to Yaraba Mibira’s Surya Siddbanta is tbe right one. 
Yaraba Mibira finally applies a correction which becomes necessary in 
consequence of reduced and slightly inaccurate figures having been em¬ 
ployed in tbe general rule. Tbe amount of this correction is stated in 
tbe second half of tbe verse quoted above etc., I am, 
however, unable for tbe present to account for it by calculation. Tbe 
fault possibly lies with tbe corruption of tbe manuscripts. 
The same chapter contains a rule for calculating the mean places of 
the moon’s node ; which I am, however, unable to explain. We therefore 
turn now to tbe 16tb adhyaya which treats of tbe mean places of tbe 
so-called tara-grabas. The text of this short adhyaya runs as follows : 
f I § 
A. B. oqTJjj- A. B. 
t A. B. 
t B- 
§ 
II B. A. 
