As you have probably noticed I am responding to different bits of your mails as individual mails and subject This helps the Chain and archiving.
> That was a codified way of communication. Like wise any such method was > followed in those days by the Kings to send and receive important messages -> was my inquisiteness. Kalki writes of "Owling " " Lighting of flame-> torches " (Like striking matches in Robert Ludlum's novels) being some > forms of communications.
There are a few examples of communication forms in our sarithira novels...Kadalpura describes the large pigeons and the fine silk embedded in the wings as a form of communication in those days...If I am right Sandilyan gives historic evidence for that...
Homing Pigeons were used by all civilisations but the message was tied on to their feet as opposed to the technique described by Sandilyan
Second is the Light signs which he used in Yavanarani once as a communiction form between Karikalan and Samanathuravi in Vanji and Second between The Rani and Karikalan in Puhar..
again ancient people have been innovative in using lights as a means of sign language