As a follow-up to the discussion of the motivation of Initial Consonant
Mutation, both generally and in the specific cases of _vi Menel_ and
_bo Ceven_, note the following quite explicit statement by Tolkien
"though of _phonetic_ origin, [lenitions] are used _grammatically_, and
so may occur or be absent in cases where this is not phonetically
justified by descent"
Carl F. Hostetter Aelfwine@... http://www.elvish.org
ho bios brachys, he de techne makre.
Ars longa, vita brevis.
The lyf so short, the craft so long to lerne.
"I wish life was not so short," he thought. "Languages take such
a time, and so do all the things one wants to know about."