1884.] 
G. Thibaiit —Yardha MiJdra’s PancJiasiddJidntiJcd . 
275 
“ 12. For Mars the additive quantity are 2 signs, 15 degrees, 35 
minutes. 
“ 13. For the S'ighra of Mercury, multiply the ahargana by 100 and 
divide by 8,797. 
“14. There the kshepa amounts to the product of four and a half 
tatparas into the (accomplished) revolutions. 
“ 15. For the Slg’hra of Venus multiply the ahargana by 10 and 
divide by 2,247. 
“ 16. To be added are ten and a half seconds multiplied by the revo¬ 
lutions. 
“ 17. 28 degrees of Leo (i. e., 4 signs plus 28 degrees) and 17 
minutes are the additive quantity of the S'ighra of Budha. 
“ 18. From (the S'ighra of) Venus are to be deducted 332,961 
seconds.” 
Of these sixteen lines, lines 1 to 6 contain rules for the calculation of 
the mean places of the five planets. Lines 7 and 8 state what corrections 
have to be applied to the mean places of Jupiter, Ma^rs and Saturn if calcu¬ 
lated according to the rules previously laid down. Lines 9 to 12 inform us 
what quantities are to be added to the mean places calculated and corrected 
according to the preceding rules, i. e., they state the mean longitudes of 
the planets at the epoch of the Karana. Lines 13 to 16 contain the rules 
for calculating and correcting the mean places of the S'ighra of Mercury 
and Venus. 
Let us now enter into details and compare the above statement re¬ 
garding the planets’ periods of revolution with what is known from other 
sources. Of Jupiter it is stated in line 3 that it performs 100 revolutions 
in 433,232 days ; one revolution therefore occupies 4,332*32 days. This 
nearly agrees with the doctrine of the published Surya Siddhanta which 
counts 364,220 revolutions of Jupiter to 1 mahayuga of 4,320,000 years, 
and consequently, the mahayuga comprising 1,577,917,828 days, 1 revolu¬ 
tion to 4,332*3,206,523 days. A small difference between Jupiter’s periods 
of revolution according to the known Siirya Siddhanta and the Surya 
Siddhanta of the Panchasiddhantika results of course from the repeatedly 
mentioned fact of the yuga of the latter work comprising 28 days less. We 
therefore assume at first that the Siirya Siddhanta of the Panchasiddhantika 
also gave 364,220 revolutions to 1 yuga, and therefrom derive the exact 
period of one revolution 
1577917800 
364200 
4,332*3,205,754. From this it 
appears that the general rule given above, according to which 1 revolution 
comprises 4,332*32 days, is inaccurate and stands in need of a correction. 
In order to ascertain the amount of the latter we take the difference of the 
accurate and the approximate periods of revolution = 0*0005754 and there- 
