1884.] G. Tliibaut —Vardha MiJiiras PancJicisiddhdjitikd. 
287 
TT%i: I 
We are concerned only witli the first half of the first line and the first 
half of the second line. The second half of the first line states the kshepa 
whose consideration we exclude ; the second half of the second lino is 
corrupt (the however, clearly indicates that the motion of the 
node is retrograde). “ Tryashtaka ” has to he taken as meaning 24. The 
rule therefore directs us to multiply (the ahargana) in the case of Idahu 
by 24 and to divide by 163,111. From this it appears that the Eomaka 
reckons 24 revolutions of the node to 163,111 days; one revolution 
therefore comprises 6,796^^ 7^. This agrees very nearly with Ptolemy’s 
determination (which we calculate from the mean daily motion of the 
node as determined by him) according to which one revolution of the node 
takes place in 6,796^ 14^, etc.f 
From these statements regarding the yuga of the Romaka Siddhanta 
we now turn to the practical rule concerning the calculation of the 
ahargana which is contained in the 8th, 9th and 10th verses of the first 
chapter where it follows immediately on the introductory verses quoted 
and translated above. 
I II 
“Deduct the S'aka year 427, (i. e., deduct 427 from the number of 
that Saka year for any day in which you wish to calculate the ahargana) 
at the beginning of the light half of Ohaitra, when the sun had half set 
* So in B. A. has over a rather indistinctly shaped letter which may be a 
^ or perhaps an ■?[; and after that 
t We may notice here a mistake which has crept into the Comparative Table of 
the Sidereal Bevolutions of the planets in Burgess—Whitney’s translation of the 
Surya Siddhanta, p. 168. The compiler of that Table when calculating the side¬ 
real revolution of the node according to Ptolemy and the moderns apparently forgot 
that, the motion of the node being retrograde, the effect of the precession of the 
equinoxes is to render the sidereal revolution of the node not longer but shorter than 
the tropical revolution ; he therefore added the difference due to the precession to 
the tropical revolution instead of deducting it. The real value of the sidereal 
revolution of the node according to the moderns is 6,793^ 10^‘, etc., and rather loss 
than this quantity according to Ptolemy. 
X A. B. 
h N 
