Thank you very much Sampath Sir for making this file available in Tamil along with English translation for the benefit of all the interested people in this work.
I saw a copy of the earlier six volumes at BORI library long ago.
One query:
By studying the horoscopes of Saptarishi Nadi so far, have you been able to have any idea about the ayanamsha used in it? I assume that planetary positions are Nirayana and you might have come across at least one horoscope of a real person born in modern times. For example, see Introduction by C.G. Rajan, pp. L-Lii for Katakam Lagna.
Thanks and regards
Narayan Prasad