Re: Reconstructed root for 'vapor, heat'

--- In cybalist@yahoogroups.com, "Abdullah Konushevci"
<akonushevci@...> wrote:

>
> Reconstructed root form for `vapor', with an uncertain assumption, is
> *kwep- `to smoke, cook, move violently, be agitated emotionally'
> (Pokorny kewHp- 596, Watkins kwe:p- 45) and according to "An
> Etymological Dictionary of Proto-Indo-European Language', revised
> version of "Indogermanisches EtymologischesWörterbuch" by Pokorny is
> *we:p-/wH1p- (*swekW-) `to blow, to soar'

Why the H(1)? If it's because of Balto-Slavic evidence, then I
don't think the reconstructions take enough factors into account.