[ 55 ] fron the annual variation in the star's R. A,, the change in its Dhruva is nearly 37 minutes in a year. This fact alone de- molishes Chandrasekhara's view. The other method suggested is an inverse application of the sun's place, calculated after the Súrya-Siddhanta (VI. 89). Assuming his calculated place to be correct, it is easy to find the beginning of the starting point of measurement. In the absence of a better method, this remains the only feasible course of procedure, and it is by this method that we have got the present ayanáins a It will be noticed (XII, 10) that Chandras ekhara gives 5* N. as the polar latitude of Revati. The fact is, he has given up the Revati of our ancient astronomy, for the simple reason that the Siddhanta Revati is hardly recognisable, and therefore practically useless. His Revati is not but , Piscium. How far this innovation will be acceptable to the public, remains to be seen. • Instances of giving old names to new stars are not rare, and this appears to be one of the main difficulties in identifying stars of different Siddhántas. For example, the star Pushya of Varába-mibira's Súrya-Siddbánta must have been a different star from the one receiving the same name in the current Stírya- Siddhánta. For Pushyá of old appears to have been Presepe of the Greeks, while modern Pushya is o Cancri. It may be useful to know the stars to which Chandras ekhara applies the Siddhanta names. For this purpose I got a chart of the stars made by him, from which the following list is prepared. Digitized by Google
