Query on Immortals of Meluha

Hi, I have finished reading the first book to the series to Shiva Trilogy - The Immortals of Meluha. It had been a fascinating and thrilling adventure, no doubt. :) Now I'm all eager to get started with the second book - The Secret of the Nagas.

There is one question in my mind for which I'm unable to get the answer. In 'Immortals of Meluha' - There is a mention of the Vayuputras twice. I can recollect one instance is when the Pandit at Ramajanmabhoomi talks about them to Shiva. Where is the other instance within the book? (NO references to Acknowledgements or Author's note please)

I have been reading the book endlessly to catch the other occurrence, but it evades me. Help!

Regards,

Nandhini