--- In cybalist@..., x99lynx@... wrote about the relationship
between Vedic and PIE.
The Rigveda might have been composed in Common Indo-Iranian rather
than in Vedic as we see it. Phonetic changes that happened after the
Rigveda was composed and they did not change the amount or metrical
length of syllables, would not show. For example, the perfect
singular of [sad] = "sit" is [se_d] in Vedic and [hazd] in Avestic;
it may have been [sazd] when the Rigveda was composed; the process of
pre-literary Vedic [z] gradually weakening and changing into vowel-
lengthening would happen in priests' chants the same as in ordinary
speech, before the priests had written texts to work from. The same
would hold for such changes as [jh] changing to [h], and final [s]
changing to visarga, and [D] between vowels changing to the retroflex
L which is written in Devanagari as an infinity sign hanging from the
top line.
Presumably by "Atlantean" you mean ideas that in the end part of the
Ice Age there was a technical or semi-technical civiliation with
routine very-long-distance transport, ref. a great quantity of fringe
literature. Here I summarize from
http://groups.yahoo.com/group/IndianCivilization/message/13481
for one way that one such idea arose and can be refuted: some said
that India was invaded by men from "a land in the sky" wearing "no-
air-armor". The Sanskrit word is [nivatakavacha]. But, learning
Sanskrit a bit better shows that this word means "practical-layer-
armor", i.e. several layers of ordinary warm clothes, and the
invaders were ordinary humans from Tibet, which is over 2 miles above
sea level and likely to be called "a land in the sky" by Indians
living in the Indus and Ganges plain.